d. Many of the more minute species with which this volume has to do are
very elusive, very difficult; for one reason,--perhaps in itself sufficient,--because of their minuteness, and consequent apparent paucity. They may be common, but none the less seldom seen. The comatrichas afford an illustration. There are several very small species. _C. pulchella_, _C. laxa_, _C. ellisii_ may be mentioned. _C. pulchella_ has been studied nearly a hundred years and has a synonymy accordingly. In 1875 Rostafinski in the material, and among the descriptions, thought he recognized two distinct forms, and went on to give them names; the first in honor of Persoon, _C. persoonii_, should show an ovate or ovate-cylindric outline with acuminate tip; the second should be truncate and represent a type first described by Berkeley under a name given by Babington, _C. pulchella_. Berkeley's drawing shows a sporangium with tip acuminate! Lilac or violaceous tints attracted attention in the spores of _C. persoonii_ only; in _C. pulchella_ all is ferruginous. Curtis is especially commended for noticing the fact in describing _S. tenerrima_, here included as we see.
_Comatricha gracilis_ Wing. is slender, cylindric and has small spores hardly reaching 6 mu; should perhaps be now set out as a separate species; it is evidently purely an American phase.
Our figures, Plate XII., 16 and 16 _a_, 18 and 18 _a_, show _C. pulchella_ and _C. gracilis_, respectively, extremes. Plate XIII., 4, shows an ovate form not very unusual. This and _C. gracilis_ occur on living leaves.
_C. ellisii_ is another of this minor series, very constant in its delicate beauty, but approaches _C. nigra_ rather than the others here discussed.
_C. laxa_, as the name implies, shows an open construction, suggested, perhaps, by Rostafinski's photographic print, but better brought out by Celakowsky, _Myx. Boehm._, Tab. 2, Figs. 7 and 8.
e. It has been shown[40] that the process of cell-division in the spore-plasm of the myxomycete is not dissimilar to that obtaining under the same conditions in higher plants. On this supposition we have explanation of spore-division in _Ceratiomyxa_ and can understand the adherence of spores now and again notable. Once the latter phenomenon was thought peculiar to the genus _Badhamia_; but the unsculptured epispore of the spores of reticularias, tubiferas, etc., suggest the same thing and more recently we find it in _Dianema_ and in the _Stemoniteae_; even _Stemonitis_ arrives with clustered spores in groups of four, and we are in sight of a generalization wide.
It is interesting to note that something of this sort was observed by at least one student long ago. Schumacher, _Enum. Pl. Sell._ 2, p. 215, describes _Arcyria atra_ with the characters of an enerthenema, and says "the capillitial threads are some of them diffuse and bear spermatic globules"! Did he anticipate _E. berkleyanum_? See the text under that species at p. 190, _supra_.
f. In a paper read December, 1920, before the _Mycological_ Division of Section G., _A. A. A. S._, the present writer discussed briefly the physical principles involved in some of the more striking peculiarities of the slime-moulds.
It is argued in that paper that the shaping of stipitate sporangia which is so surprising as relating to the ordinary behaviour of fluid masses, as usually observed, is, in part at least, referable to certain well known properties of fluids generally. For this discussion those interested are referred to the article itself in the November number of _Mycologia_ (N. Y.).
Sufficient to say here that it is a fact, in many cases, that in stipitate fructification, so far as observed, the stipe is first to take form, and, as viewed by the writer, in many cases, as it rises, becomes more and more a most delicate but definite ectosarcate capillary tubule, by which ascends the spore-plasm of the point concerned, to such level as may meet the immediate conditions of pressure, of whatsoever source.
It will be interesting in this view to note the resultant shapes as presented in the sporangia of various genera. One may examine for illustrations Figs. 1, 3, 4, 7, Pl. XX., with the thought in mind that the stipe in each case may have served as a capillary tubule to carry up the spore-plasm to the position in which the spores at length are found. In some species of _Hemitrichia_, for instance, there are spores or spore-like cells found at maturity in the hollow stipe. In other cases the stipe contains refuse matter.
The capillary theory may not, probably does not, play part in every case. It would seem that a stemonitis, for example, must owe the rise of the spore-plasm to the play of different machinery. _Brefeldia_, p. 154 above, may offer suggestion.
g. On page two of the introductory section of this volume mention is made of the variety of colors shown in the vegetative phases of the organisms we study. This fact is patent to all observers; but the identity of the plasmodium making the display must be ascertained by painstaking or prolonged and repeated observations. This for the reason that, as I am convinced, only in comparatively few cases is the color unchanged during the life-history of a given fructification. It may sometimes change from hour to hour as development proceeds. The color designated in the descriptive pages of this work is presumably, unless as otherwise set out, that immediately preceding that of the maturing fruit.
As suggestive, and as, it is hoped, contributory to better knowledge of this phase of our subject a list of species is here subjoined as presented by my colleague, Professor Morton E. Peck of Oregon, who has given unusual attention to this particular investigation.
SPECIES PLASMODIUM COLORS
_Physarum sinuosum_ light grey, nearly white, ivory white
_Physarum serpula_ greenish-yellow; yellow
_Physarum virescens_ pale greenish-yellow; yellow
_Physarum cinereum_ watery grey, becoming white; pallid
_Physarum didermoides_ watery grey, becoming white; blue-white
_Physarum notabile_ pure white
_Physarum globuliferum_ greenish-yellow; yellow
_Physarum leucopus_ light grey
_Physarum pulcherrimum_ dark red
_Physarum flavicomum_ greenish or brownish yellow
_Physarum viride_ clear yellow
_Physarum wingatense_ at first grey, then pure white
_Badhamia orbiculata_ pale yellow, passing to white
_Physarella oblonga_ brilliant yellow
_Mucilago spongiosa_ watery grey, then white
_Didymium crustaceum_ white
_Didymium squamulosum_ pale grey, watery white
_Diderma floriforme_ grey tinged with yellow
_Stemonitis fusca_ white passing through blue to black
_Stemonitis smithii_ green to yellow to reddish purple
_Comatricha longa_ white, cream-yellow, reddish purple to dusky
_Comatricha irregularis_ white
_Comatricha nigra_ white
_Comatricha typhoides_ bluish white
_Diachaea splendens_ pure white
_Enerthenema papillatum_ colorless or greenish
_Reticularia lycoperdon_ white
_Dictydiaethalium plumbeum_ colorless, pink, salmon, rose, orange, chocolate brown
_Lindbladia effusa_ brown, lead-colored
_Tubifera ferruginosa_ watery white, scarlet, brown, almost black
_Cribraria dictydioides_ clear dark green
_Cribraria tenella_ watery, dark plumbeous, bronze
_Cribraria cuprea_ red
_Arcyria nutans_ white
_Arcyria denudata_ watery white, then flesh-color
_Arcyria cinerea_ grey, then white
_Trichia varia_ colorless, then white
h. In a few instances references to illustration do not find place in connection with the descriptive matter. One phase of _Physarum albescens_ is figured on Pl. III.; _Mucilago_ will be found portrayed on Pl. VII.; _Physarum viride_ on Pl. VIII.
j. The group before us has research possibilities not a few. The question of their nutrition and its limits in respect of variety, is yet to be solved. From present indications all that can be said is to the effect that a pabulum similar in variety, no doubt meets the needs of many species. Whether in artificial culture a single base as gelatin or agar would suffice for all or several is yet to be discovered.
Whether a species brought from spore to maturity on artificial diet would conform in any reasonable way to our dim concept of its identity is also, it would seem, a problem. The variation in the field would seem to make it doubtful.
From the table immediately preceding it is plain that there is place for doubt. Color it is surmised is of itself everywhere incidental; the structure, which maintains identity or the reverse, lies deeper, although color may be none the less, in some way a resultant, and therefore in so far a reliable taxonomic guide.
The treatment of our subject so far by no means exhausts the possibilities of even the simpler phases of microscopic study. We have endeavored to appreciate the work of those who hand us the literature of the group, and to recognize what such keen-eyed men have seen; but in our western and southern forests there are probably double as many species, as species go, as we have listed.
The entire group is, as it would seem, in highest measure worthy of investigation and comprehension, and should it at any time prove that to such accomplishment the present volume may have been in any smallest way contributory, the author's satisfaction will be complete indeed.
FOOTNOTES:
[40] Farr. _Cell-division in Pol. Mother-cells, Cobaea scandens, Bull. Tor. Bot. Cl._, Vol. 47, pp. 325-38.
INDEX
NATURAL ORDERS, etc.
CRIBRARIALES, 199
EXOSPOREAE, 18
LYCOGALALES, 232
PHYSARALES, 22
PHYTOMYXINAE, 17
STEMONITALES, 148
TRICHIALES, 236
GENERA
ALWISIA, 208 _Alwis_; personal.
AMAUROCHAETE, 148 [Greek: amauros], dusky, and [Greek: chaite], hair. Gr.
ARCYRIA, 247 [Greek: arkyon] a net. Gr.
BADHAMIA, 313 _C. D. Badham_; personal.
BREFELDIA, 154 _O. Brefeld_; personal.
CALONNEMA, 266 [Greek: kalos], beautiful, and [Greek: nema], a thread. Gr.
CERATIOMYXA, 18 [Greek: keration], a small horn, and [Greek: myxa], mucus. Gr.
CIENKOWSKIA, 110 _Leon Cienkowski_; personal
CLASTODERMA, 191 [Greek: klastos], broken, and [Greek: derma], dermis, skin or covering. Gr.
COLLODERMA, 147 [Greek: kolla], glue, and [Greek: derma], dermis, covering.
COMATRICHA, 171 [Greek: kome], and [Greek: thrix], both words meaning hair. Gr.
CRATERIUM, 103 [Greek: krater], a vessel. Gr.
CRIBRARIA, 216 _cribrum_, a sieve. Lat.
DIACHAEA, 185 [Greek: diacheiu], to pour out; the application not patent. Gr.
DIANEMA, 238 [Greek: dia], through or across, and [Greek: nema], thread. Gr.
DICTYDIUM, 230 [Greek: diktyon], a net. Gr.
DICTYDIAETHALIUM, 215 Dictydium and aethalium; the latter from [Greek: aithalos], sooty. Gr.
DIDERMA, 129 [Greek: dis], twice or twofold, and [Greek: derma], as above. Gr.
DIDYMIUM, 115 [Greek: didymos], double. Gr.
ECHINOSTELIUM, 198 [Greek: echinos], a sea-urchin, and [Greek: stelion], (?), a handle or stem. Gr.
ENERTHENEMA, 189 [Greek: enerthe], below, and [Greek: nema], a thread.
ENTERIDIUM, 211 [Greek: enteron] the intestine. Gr.
FULIGO, 23 fuligo, soot. Lat.
_=Hemiarcyria=_, 259 [Greek: hemi], half, and Arcyria.
HEMITRICHIA, 259 [Greek: hemi], half, and Trichia.
HETEROTRICHIA, 256 [Greek: heteros], other, and Trichia.
LACHNOBOLUS, 245 [Greek: lachnos], woolly, and [Greek: bolos], a lump. Gr.
LAMPRODERMA, 191 [Greek: lampros], shining, and [Greek: derma], as above. Gr.
LEOCARPUS, 111 [Greek: leios], smooth, and [Greek: karpos], fruit. Gr.
LEPIDODERMA, 144 [Greek: lepis], a scale, and [Greek: derma], a covering. Gr.
LICEA, 199 said to be Latin; _licium_, a thrum, a girdle.
LINDBLADIA, 203 _A. Lindblad_; personal.
LYCOGALA, 233 [Greek: lykos], a wolf, and [Greek: gala], milk. Gr.
MARGARITA, 237 [Greek: margarites], a pearl. Gr.
MUCILAGO, 113 _mucilago_, musty juice. Lat.
OLIGONEMA, 278 [Greek: oligos], few, and [Greek: nema], a thread. Gr.
OPHIOTHECA, 240 [Greek: ophis], a serpent, and [Greek: theke], a case. Gr.
ORCADELLA, 203 [Greek: orka], a cask (?). Diminutive.
PERICHAENA, 242 [Greek: peri], around, and [Greek: chainein], to crack open. Gr.
PHYSARUM, 45 [Greek: physa], a bladder, something inflated.
PHYSARELLA, 71 Diminutive of _Physarum_.
PLASMODIOPHORA, 17 [Greek: plasma], something formed, and [Greek: phoros], that bears. Gr.
PROTOTRICHIA, 257 [Greek: protos], first, and _Trichia_.
RETICULARIA, 209 _reticulum_, a small net. Lat.
STEMONITIS, 156 Like a stamen.
TILMADOCHE, 95 [Greek: tilma], lint, and [Greek: doche], containing. Gr.
TRICHIA, 267 [Greek: ophix], hair. Gr.
TUBIFERA, 205 _tubus_, a tube, and _fero_, I bear. Lat.
GENERA AND SPECIES
=_Aethaliopsis,_=, 26. _stercoriformis_ Zopf., 27.
=_Aethalium_=, 23. _flavum_ Link., 27. _septicum_ Fr., 27.
ALWISIA, 208. bombarda _Berk. & Br._, 208.
AMAUROCHAETE, 148. _atra_ (Alb. & Schw.) Rost., 6, 149. _cribrosa_ (Fr.) Macbr., 150. fuliginosa (_Sow._) _Macbr._, 149. tubulina (_Alb. & Schw._) _Macbr._, 150. _minor_ Sacc. & Ell., 145.
=_Angioridium_=, 52. _sinuosum_ Grev., 52.
ARCYRIA, 247. _albida_ Pers., 245. _bicolor_ Berk. & C., 255. cinerea (_Bull._) _Pers._, 254. conglobosa _Macbr._, 255. _decipiens_ Pers., 276. denudata (_L._) _Sheld._, 253. digitata (_Schw._) _Rost._, 255. ferruginea _Sauter._, 253. _flava_ Pers., 249. _gabriellae_ Rav., 257. _globosa_ Schw., 245. incarnata _Pers._, 6, 251. insignis _Kalchbr. & Cke._, 256. _leucocephala_ Pers., 105. magna _Rex_, 248. nodulosa _Macbr._, 252. nutans (_Bull._) _Grev._, 249. oerstedtii _Rost._, 249. pomiformis (_Leers_) _Rost._, 255. _punicea_ Pers., 253. _stipata_, List., 262. versicolor _Phill._, 250. _vitellina_ Phill., 250.
BADHAMIA, 31. affinis _Rost._, 35. capsulifera (_Bull._) _Berk._, 38, 40. chrysotricha _Berk. & C._, 34. decipiens (_Curt._) _Berk._, 34. _decipiens_ Berk., 49, 63. foliicola _G. List._, 39. gracilis _var. Macbr._, 37. _hyalina_ (Pers.) Berk., 40. iowensis _Macbr._, 36. inaurata _Currey_, 34. lilacina (_Fr._) _Rost._, 65. macrocarpa (_Ces._) _Rost._, 37. _macrocarpa_ Rost., 37. magna _Peck_, 38. nitens _Berk._, 34. _nodulosa_ Mass., 51. orbiculata _Rex_, 37. ovispora _Racib._, 33. panicea (_Fr._) _Rost._, 35, 51. papaveracea _Berk. & R._, 42. _penetralis_ Cke. & Ell., 177. populina _List._, 41. rubiginosa (_Chev._) _Rost._, 43. subaquila _Macbr._, 44. utricularis (_Bull._) _Berk._, 39. _varia_ Mass., 38. _verna_ Fries, 51. versicolor _List._, 33.
BREFELDIA, 154. maxima (_Fr._) _Rost._, 154.
=_Byssus._= _fruticulosa_ Fl. Dan., 19.
CALONEMA, 266. aureum _Morg._, 266.
CERATIOMYXA, 18. arbuscula _Berk. & Br._, 20. filiforma _Berk. & Br._, 20. fruticulosa (_Muell._) _Macbr._, 19. _mucida_ Schroet., 19, 21. porioides (_Alb. & Schw._) _Schroet._, 19, 20, 21.
=_Ceratium_=, _hydnoides_ Alb. & Schw., 19. _porioides_ Alb. & Schw., 19, 20.
=_Chondrioderma_=, see Diderma. _aculeatum_ Rex, 139. _calcareum_ Rost., 95. _crustaceum_ (Peck) Berl., 135. _globosum_ (Pers.) Rost., 134. _michelii_ (Lib.) Rost., 138. _niveum_ Rost., 137. _radiatum_ (L.) Rost., 141. _reticulatum_ Rost., 131. _roanense_ Rex, 141. _rugosum_ Rex, 144 _sauteri_ Rost., 139. _stromateum_ (Link.) Rost., 132. _testaceum_ (Schrad.) Rost., 137. _trevelyani_ (Grev.) Rost., 142.
CIENKOWSKIA, 110. reticulata (_Alb. & Schw._) _Rost._, 49, 111.
=_Cionium_=, _xanthopus_ Ditm., 123.
CLASTODERMA, 191. debaryanum _Blytt._, 191.
=_Clathroptychium_=, 215. _rugulosum_ (Wallr.) Rost., 215.
=_Clathrus._= _adnatus_ Batsch, 251. _denudatus_ L., 253. _ramosus_ Retz., 193.
=_Clavaria_=, 19. _byssoides_ Bull., 19. _puccinia_ Batsch, 19.
COLLODERMA, 147. oculatum (_Lipp._) _G. List._, 147.
COMATRICHA, 171. aequalis _Peck_, 180. caespitosa _Sturg._, 173. _crypta_ Schw., 127. cylindrica (_Bilgr._) _Macbr._, 173. elegans (_Racib._) _G. List._, 182. _ellisiana_ (Cke.) Ell. & Ev., 177. ellisii _Morg._, 184. flaccida (_List._) _Morg._, 174. _friesiana_ (DBy.) Rost., 128. _gracilis_ Wing, 183. irregularis _Rex_, 176. laxa _Rost._, 177, 184. longa _Peck_, 175. nigra (_Pers._) _Schroet._, 178, 184. _obtusata_ (Preuss.) List., 179, 190. _persoonii_ Rost., 183. pulchella (_Bab._) _Rost._, 183. rubens _List_., 183. _shimekiana_ Macbr., 144. _stemonitis_ (Scop.) Shel., 181. subcaespitosa _Peck_, 132. suksdorfii _Ell. & Ev._, 178. _typhina_ (Pers.) Rost., 181. typhoides (_Bull._) _Rost._, 163, 181.
=_Cornuvia_=, 240, 241. _circumscissa_ (Wallr.) Rost., 241. _wrightii_ (Berk. & C.) Rost., 241.
=_Crateriachaea._= _crateriachaea mutabilis_ Rost., 99.
CRATERIUM, 73. aureum (_Schum._) _Rost._, 104. _citrinellum_ List., 37. concinnum _Rex_, 107. _confusum_ Mass., 79. _convivale_ (Batsch) Morg., 105. _cylindricum_ Mass., 106. leucocephalum (_Pers._) _Ditm._, 105, 106. _lilacinum_ Mass., 65. _maydis_ Morg., 91. minimum _Berk. & C._, 106. minutum (_Leers_) _Fr._, 107, 108. _mutabile_ Fr., 104. _nodulosum_ (C. & B.) Morg., 51. _obovatum_ Peck, 70. _paraguayense_ (Speg.) List, 103. _pedunculatum_ Trent., 58, 107, 108. _rubescens_ Rex, 103. _rubiginosum_ Mass., 70. _vulgare_ Ditm., 107.
CRIBRARIA, 216. argillacea Pers., 218. aurantiaca _Schrad._, 221. _cernua_ Pers., 230. cuprea _Morg._, 229. dictydioides _Cke. & Balf._, 222. elegans _Berk. & C._, 228. intricata (_Schrad._) _Rost._, 223. languescens _Rex_, 229. macrocarpa _Schrad._, 219. microcarpa (_Schrad._) _Pers._, 226. _microscopica_ _Berk. & C._, 220. _minima_ Berk. & C., 220. minutissima _Schw._, 220. piriformis _Schrad._, 228. purpurea _Schrad._, 228. rufa (_Roth_) _Rost._, 220. splendens (Schrad.) Pers., 221. tenella _Schrad._, 225. violacea _Rex_, 227. _vulgaris_ Schrad., 222.
=_Cytidium._= _melleum_ (Berk. & Br.) Morg., 65. _ravenelii_ (Berk. & C.) Morg., 48. _rufipes_ (Alb. & Schw.) Morg., 50.
=_Dermodium_=, 236. _conicum_ (Pers.) Rost., 236.
DIACHAEA, 185. bulbillosa (_Berk. & Br._) _List._, 188. _caespitosa_ List., 173. _cylindrica_ (Bilgr.) List., 173. _elegans_ Fr., 186. leucopodia (_Bull._) _Rost._, 186. splendens _Peck_, 187. subsessilis _Pk._, 187. thomasii _Rex_, 173, 188.
DIANEMA, 238. andersoni _Morg._, 239. corticatum _List._, 238. harveyi _Rex_, 238.
DICTYDIAETHALIUM, 215. plumbeum (_Schum._) _List._, 215.
DICTYDIUM, 230. cancellatum (_Batsch_) _Macbr._, 6, 230. cancellatum cancellatum _Macbr._, 231. cancellatum purpureum _Macbr._, 232, 173. cancellatum prolatum _Macbr._, 232. _cernuum_ Nees, 230. _longipes_ Morg., 231. _microcarpon_ Schrad., 226. _splendens_ Schrad., 221. _umbilicatum_ Schrad., 230.
DIDERMA, 129. _albescens_ Phill., 137. asteroides _List._, 143. _brunneolum_ Phill., 58. cinereum _Morg._, 138. _citrinum_ Peck, 37. _conglomeratum_ Fr., 57. _contextum_ Pers., 31. cor-rubrum _Macbr._, 140. crustaceum _Peck_, 135. _difforme_ (Pers.) Morg., 126. effusum (_Schw._) _Morg._, 130. floriforme (_Bull._) _Pers._, 143. _geasteroides_ Phill., 142. globosum _Pers._, 134. _globuliferum_ Fr., 46. _granulatum_ (Schw.) Fr., 31. hemisphericum (_Bull._) _Horne._, 138. _laciniatum_ Phill., 142. lyallii _Mass._, 136. _mariae-wilsoni_ Clinton, 137. _minutum_ (Schum.) Fr., 31. niveum (_Rost._) _Macbr._, 137. _oblongum_ Fr., 40. ochraceum _Hoffm._, 140. _ochroleucum_ Berk. & C., 31. _persoonii_ Macbr., 126. radiatum (_L._) _Morg._, 141. _reticulatum_ Fr., 111, 130. reticulatum (Rost.) Morg., 131. roanense (_Rex_) _Macbr._, 141. _rufipes_ (Alb. & Schw.) Fr., 50. rugosum (_Rex_) _Macbr._, 144. sauteri (_Rost._) _Macbr._, 139. simplex List., 132. spumarioides _Fr._, 132. _squamulosum_ Alb. & Schw., 119. _stellare_ (Schrad.) Pers., 141. testaceum (_Schrad._) _Pers._, 137. trevelyani (_Grev._) Fr., 142. _vernicosum_ Pers., 112.
DIDYMIUM, 115. anellus _Morg._, 117. annulatum _Macbr._, 125. anomalum _Sturg._, 127. _chrysopeplum_ Berk. & C., 47. _cinereum_ (Batsch) Fr., 35. clavus (_Alb. & Schw._) _Rabh._, 122. complanatum (_Batsch_) _Rost._, 116. _connatum_ Peck, 41. crustaceum _Fr._, 118. difforme _Duby_, 126. dubium _Rost._, 126. _effusum_ Link., 119. _erythrinum_ Berk., 50. _excelsum_ Jahn, 128. eximium _Peck_, 124. _farinaceum_ Schrad., 121. fulvum _Sturg._, 118. _glaucum_ Phill., 41. _gyrocephalum_ Mont., 95. _hemisphericum_ (Bull.) Fr., 138. intermedium _Schrad._, 128. _lateritium_ Berk. & Rav., 33. leoninum _Berk. & Br._, 128. _melanopus_ Fr., 122. melanospermum (_Pers._) _Macbr._, 121. _melleum_ Berk. & Br., 47. _michelii_ Lib., 138. _microcarpon_ (Fr.) Rost., 123. minus _List._, 121. _nigripes_ Fr., 91. nigripes (_Link_) _Fr._, 123. _obrusseum_ Berk. & C., 52. _oculatum_ Lipp., 147. _paraguayense_ Speg., 103. _polycephalum_ (Schw.) Fr., 95. _polymorphum_ Mont., 95. _proximum_ Berk. & C., 123. quitense (_Pat._) _Torr._, 127. _ravenelii_ Berk. & C., 48. _serpula_ Fr., 116. squamulosum (Alb. & Schw.) Fr., 119. _stellare_ Schrad., 141. _tenerrimum_ Berk. & C., 52. _testaceum_ Schrad., 137. _tigrinum_ Schrad., 145. trochus _List._, 125. wilczekii _Meylan_, 117. xanthopus (_Ditm._) _Fr._, 123. _zeylanicum_ Berk. & Br., 102.
=_Diphtherium._= _flavofuscum_ Ehr., 176.
ECHINOSTELIUM, 198. minutum DeBary, 198.
ENERTHENEMA, 189. berkeleyanum _Rost._, 190. _elegans_ Bowm., 190. papillatum (_Pers._) _Rost._, 190. _syncarpon_ Sturg., 190.
ENTERIDIUM, 211. _cinereum_ Schw., 26. minutum _Sturg._, 214. olivaceum _Ehr._, 214. _rozeanum_ (Rost.) Wing., 211. splendens _Morg._, 211.
ERIONEMA, 31. aureum _Penz._, 31.
FULIGO, 23. cinerea (_Schw._) _Morg._, 26. _ellipsospora_ List., 26. flava _Pers._, 29. intermedia _Macbr._, 30. laevis _Pers._, 29. megaspora _Sturg._, 30. muscorum _Alb. & Schw._, 25. _ochracea_ Peck, 25. ovata (_Schaeff._) _Macbr._, 6, 27. _plumbea_ Schum., 215. rufa _Pers._, 28. septica (_L._) _Gmel._, 27. _varians_ Rost., 27. _varians_ Sommf., 23. violacea _Pers._, 29.
=_Hemiarcyria_=, see next, 259.
HEMITRICHIA, 259. _ablata_ Morg., 264. clavata (_Pers._) _Rost._, 264. _funalis_ Morg., 264. intorta _List._, 263. karstenii _Rost._, 260. leiocarpa _Cooke_, 263. _longifila_ Rex, 263. montana Morg., 266. _obscura_ Rex, 260. ovata (_Pers._) _Macbr._, 261. _plumosa_ (Morg.), 265. _rubiformis_ (Pers.) Rost., 262. serpula (_Scop._) _Rost._, 260. stipata (_Schw._) _Rost._, 262. stipitata _Mass._, 265. _varneyi_ Rex, 263. vesparium (_Batsch_) _Macbr._, 262. _wigandii_ Rost., 261.
HETEROTRICHIA, 256. gabriellae (_Rav._) _Mass._, 257.
=_Isaria._= _mucida_ Pers., 19.
LACHNOBOLUS, 245. _congesta_ Berk. & Br., 247. _cribrosus_ Fr., 150. globosus (_Schw._) _Rost._, 245. _incarnatus_ (Alb. & Schw.) Schroet., 246. occidentalis _Macbr._, 246.
LAMPRODERMA, 191. _arcyrioides_ (Sommf.) Morg., 194. _arcyrioides iridea_ Cke., 195. arcyrionema _Rost._, 197. columbinum (_Pers._) _Rost._, 194. _ellisiana_ Cke., 177. _irideum_ (Cke.) Mass., 195. _minutum_ Rost., 144. physaroides (_Alb. & Schw._) _Rost._, 192. robustum _Ell. & Ev._, 193. _sauteri_ Rost., 193. scintillans (Berk. & Br.) List., 195. violaceum (_Fr._) Rost., 196.
=_Leangium._= _stipatum_ Schw., 262. _trevelyani_ Grev., 142.
LEOCARPUS, 111. fragilis (_Dicks._) _Rost._, 112. _fragilis_ Link., 81. _fulvus_ Macbr., 86. _vernicosum_ Link., 112.
LEPIDODERMA, 144. carestianum Rost., 145. chailletii Rost, 146. _stellatum_ Mass., 61. tigrinum (_Schrad._) Rost., 128, 145.
LICEA, 199. biforis _Morg._, 201. _effusa_ Ehr., 203. minima _Fr._, 201. _ochracea_ Peck, 25. pusilla _Schrad._, 202. _rugulosa_ Wallr., 215. _stipitata_ Berk. & R., 207. variabilis _Schrad._, 200.
LINDBLADIA, 203. effusa (_Ehr._) _Rost._, 204. _tubulina_ Fr., 154.
LYCOGALA, 233. _atrum_ Alb. & Schw., 149. conicum _Pers._, 236. _contortum_ Ditm., 269. epidendrum (_Buxb._) _Fr._, 6, 233. exiguum _Morg._, 236. flavofuscum (_Ehr._) _Rost._, 234. _miniata_ Pers., 234. _terrestre_ Fries, 234.
=_Lycoperdon_=, 175. _cinereum_ Batsch, 34. _complanatum_ Batsch, 116. _corticale_ Batsch, 243. _epidendron_ (Buxb.) L., 233. _favogineum_ Batsch, 272. _fragile_ Dicks., 81. _fuliginosum_ Sow., 149. _pusillum_ Hedw., 276. _radiatum_ L., 141. _vesparium_ Batsch, 262.
MARGARITA metallica (_Berk. & Br._) _List._, 237.
MUCILAGO, 113. spongiosa (_Leyss._) _Morg._, 114.
=_Mucor_=, 23. _cancellatus_ Batsch, 230. _ovatus_ Schaeff., 27. _pomiformis_ Leers, 255. _septicus_ L., 27. _serpula_ Scop., 260. _spongiosus_ Leyss., 83. _stemonitis_ Scop., 181.
OLIGONEMA, 278. brevifilum _Peck_, 280. flavidum (_Peck_) _Mass._, 279. fulvum _Morg._, 281. nitens (_Lib._) _Rost._, 280.
OPHIOTHECA, 240. chrysosperma _Currey_, 241. _pallida_ Berk. & C., 240. _umbrina_ Berk. & C., 240. vermicularis (_Schw._) _Macbr._, 240. wrightii _Berk. & C._, 241.
ORCADELLA, 203. operculata _Wing._, 203.
=_Orthotrichia_=, 191. _microcephala_ Wing., 191.
PERICHAENA, _caespitosa_ Peck, 204. corticalis (_Batsch_) _Rost._, 243. depressa _Lib._, 6, 242. _flavida_ Peck, 279. _incarnata_ (Alb. & Schw.) Fr., 247. _irregularis_ Berk. & C., 243. marginata _Schw._, 244. _pallida_ (Schw.) Rost., 240. _populina_ Fr., 243. quadrata _Macbr._, 243. _vaporaria_ Schw., 242.
PHYSARELLA, 108. _mirabilis_ Peck, 109. oblonga (_Berk. & C._) _Morg._, 109.
PHYSARUM, 45. aeneum (_List._) _R. G. Fries_, 101. affine _Rost._, 80. albescens _Ell._, 86. _albicans_ Peck, 66. _album_ Fr., 76. alpinum _G. List._, 54. _atrorubrum_ Peck, 68. _atrum_ Schw., 78. _aurantium_ Pers., 98. _aureum_ Pers., 98. auriscalpium _Cke._, 86, 90. _berkeleyi_ (Rost.) List., 92, 93. bethelii (_Macbr._) _List._, 94. bitectum _List._, 53. _bivalve_ Pers., 52. bogoriense _Racib._, 54. brunneolum _Phill._, 58. _caespitosum_ Schw., 85. _calidris_ List., 76. carneum _List. & Sturg._, 85. _cernuum_ (Schum.) Fr., 97. _chrysopeplum_ Berk. & C., 65. _chrysotrichum_ Berk. & C., 34, 50. cinereum (_Batsch_) _Pers._, 51, 59, 99. _cinereum_ Ell. & Ev., 36. citrinellum _Peck_, 85. citrinum _Schum._, 66, 85. _clavus_ Alb. & Schw., 122. _columbinum_ Macbr., 66. _columbinum_ Pers., 73. _compactum_ List., 72. compressum _Alb. & Schw._, 80. confertum _Macbr._, 64. _confluens_ (Pers.) Morg., 80. conglomeratum (_Fr._) _Rost._, 57. _connatum_ Peck, 80. _connexum_ (Link.) Morg., 80. contextum _Pers._, 56. crateriforme _Petch._, 100. _cupripes_ Berk. & R., 93. _decipiens_ Curt., 34. dictyospermum _List._, 100. diderma _Rost._, 53, 55. didermoides (_Ach._) _Rost._, 6, 55, 78. discoidale _Macbr._, 74. _ditmari_ Rost., 61. echinosporum _List._, 101. _effusum_ Schw., 130. _ellipsosporum_ Rost., 26. _erythrinum_ Berk., 69. _farlowii_ Rost., 66. _flavidum_ Peck, 57. flavicomum _Berk._, 93. _flavum_ Fr., 84. _fulvum_ _List._, 86. _galbeum_ _Wing._, 92. _glaucum_ (Phill.) Mass., 41. globuliferum (_Bull._) _Pers._, 66. _griseum_ Link., 59. gulielmae _Penzig_, 101. gyrosum _Rost._, 49, 94, 95. _hyalinum_ Pers., 40. _inaequale_ Peck, 50. instratum _Macbr._, 62. lateritium (_Berk. & Br._) _Rost._, 50. leucophaeum _Fr._, 75. _leucophaeum_ (Fr.) Macbr., 80. leucopus _Link._, 79. lilacinum _Sturg. & Bilg._, not Fr., 67. _lividum_ Rost., 78. _luteum_ Pers., 59. luteo-album _List._, 71. _macrocarpon_ Cesati, 37; Fuckel, 102. maculatum _Macbr._, 77. _maydis_ Torr., 91. megalosporum _Sturg._, 63. _melanospermum_ Pers., 88. melleum (_Berk. & Br._) _Mass._, 65. _microcarpon_ Fr., 123. mortoni _Macbr._, 58. murinum _List._, 68. mutabile (_Rost._) _List._, 99. _nefroideum_ Rost., 80. newtoni _Macbr._, 73. nicaraguense _Macbr._, 83. _nigripes_ Link., 123. nodulosum _Cke. & Balf._, 76. notabile _Macbr._, 80. nucleatum _Rex_, 72. nutans _Pers._, 75, 97. oblatum _Macbr._, 91. _oblongum_ Fr., 78. _obrusseum_ (Berk. & C.) Rost., 92. _ochroleucum_ Berk. & C., 57. _ornatum_ Peck, 91. _paniceum_ Fr., 35. penetrale _Rex_, 70. _petersii_ Berk. & C, 66, 69, 92. _phillipsii_ Balf., 41. _physaroides_ Alb. & Schw., 139. plumbeum _Fr._, 59. polycephalum _Schw._, 95. _polymorphum_ (Mont.) Rost., 80, 92. _polymorphum_ Rost., 52. _psittacinum_ Ditm., 74. pulcherrimum _Berk. & Rav._, 68. pulcherripes _Peck_, 69. _pusillum_ List., 76. _ravenelii_ (Berk. & C.) Mass., 68. _reniforme_ List., 83. _reticulatum_ Alb. & Schw., 49, 111. roseum _Berk. & Br._, 100. _rostafinskii_ Mass., 57. _rubiginosum_ Chev., 62. _rufipes_ Alb. & Schw., 69. _schumacheri_ Spreng., 65. _scyphoides_ Cke. & Balf., 105. serpula _Morg._, 49. sinuosum (_Bull._) _Weinm._, 52. straminipes List., 100. striatum _Fries_, 59. _stromateum_ Link, 132. _sulphureum_ (Alb. & Schw.) Sturg., 84. _tenerum_ Rex., 77. tenerum _Rex_, 92. _testaceum_ Sturg., 55. _thejoteum_ Fr., 62. tropicale _Macbr._, 82. _utriculare_ (Bull.) Chev., 39. variabile _Rex_, 89. vernum _Rost._, 51. _vermicularis_ Schw., 240. viride _Pers._, 98. _virescens_ Ditm., 61, 62. wingatense _Macbr._, 72.
PLASMODIOPHORA, 17. brassicae _Wor._, 18.
=_Protoderma._= _pusilla_ Rost., 202.
PROTOTRICHIA, 257. _flagellifera_ (Berk. & Br.) Rost., 258. metallica (_Berk._) _Mass._, 258.
=_Puccinia_=, 18. _byssoides_ Gmel., 19. _ramosa_, etc., Mich., 19.
=_Raciborskia._= _elegans_ Berl., 182.
RETICULARIA, 209. _alba_ Bull., 114. _atra_ Fr., 152. _cribrosa_ Fr., 150. _flavofusca_ (Ehr.) Fr., 234. _hemispherica_ Bull., 138. lycoperdon _Bull._, 6, 210. _maxima_ Fr., 154. _rozeana_ Rost., 211. _sinuosa_ Bull., 52. _splendens_ Morg., 211.
=_Rostafinskia_=, 182. _elegans_ Racib., 182.
=_Scyphium._= _rubiginosum_ (Chev.) Rost., 70.
=_Siphotychium_=, 207. _casparyi_ Rost., 207.
=_Sphaerocarpus._= _albus_ Bull., 97. _aurantius_ Bull., 98. _capsulifer_ Bull., 40. _chrysospermus_ Bull., 272. _cylindricus_ Bull., 206. _floriformis_ Bull., 143. _fragilis_ Sowb., 274. _globuliferus_ Bull., 66. _luteus_ Bull., 98. _utricularis_ Bull., 67. _viridis_ Bull., 98.
=_Spumaria_=, 113. _alba_ (Bull.) DC., 114. _didermoides_ (Ach.) Pers., 40. _granulata_ Schum., 57. _licheniformis_ Schw., 78. _minuta_ Schum., 57. _mucilago_ Pers., 114.
STEMONITIS, 156. _alba_ (Bull.) Gmel., 97. _argillacea_ (Pers.) Gmel., 218. axifera (_Bull._) _Macbr._, 168, 169, 171. _baeuerlinii_ Mass. (?), 166. _botrytis_ (Pers.) Gmel., 274. carolinensis _Macbr._, 170. _castillensis_ Macbr., 162. confluens _Cke. & Ell._, 158. dictyspora _Rost._, 161. _digitata_ Schw., 255. fenestrata _Rex_, 166. _ferruginea_ Ehr., 167, 168, 169. _ferruginosa_ Batsch., 206. flavogenita _Jahn_, 169. _friesiana_ DBy., 178. fusca (_Roth._) _Rost._, 160, 162. herbatica _Peck_, 171. _leucocephala_ (Pers.) Gmel., 105. _maxima_ Schw. (?), 160. _microspora_ List., 167. _morgani_ Peck, 164. _nigra_ Pers., 178, 179. nigrescens _Rex_, 162. _ovata nigra_ Pers., 178. pallida _Wing._, 169, 170. _papillata_ Pers., 190. pulchella _Bab._, 183. _scintillans_ Berk. & Br., 142. smithii _Macbr._, 167. splendens _Rost._, 164, 174. _splendens_ var. _confluens_ List., 6, 158. _suksdorfii_ Ell. & Ev., 178. _tenerrima_ Berk. & C., 170, 183. _tenerrima_ Curt., 122, 129, 183. trechispora (_Berk._) _Torr._, 159. _tubulina_ Alb. & Schw., 150. _typhina_ Pers., 181. _typhina_ Wig., 130. _typhoides_ (Bull.) DC., 181. uvifera _Macbr._, 161. varia (Pers.) Gmel., 270. _violacea_ Fr., 196. virginiensis _Rex_, 163. _viridis_ (Bull.) Gmel., 98. webberi _Rex_, 163.
TILMADOCHE, 57. _alba_ (Bull.) Macbr., 97. _bethelii_ Macbr., 94. _cernua_ (Schum.) Fr., 97. _columbina_ (Berk. & C.) Rost., 72. _compacta_ Wing., 72. _gyrocephala_ (Mont.) Rost., 95. _hians_ Rost., 109. _mutabilis_ Rost., 98. _nutans_ (Pers.) Rost., 97. _oblonga_ (Berk. & C.) Rost., 71. _polycephala_ (Schw.) Macbr., 95. _viridis_ (Bull.) Sacc., 98.
=_Tremella_=, 19. _hydnoides_ Jacq., 19.
=_Trichamphora_=, 102. _oblonga_ Berk. & C., 109. pezizoidea _Jungh._, 102.
TRICHIA, 267. _abietina_ Wig., 261. _abrupta_ Cke., 271. _affinis_ DBy., 271. andersoni _Rex_, 211. _aurea_ Schum., 104. _axifera_ Bull., 168. botrytis _Pers._, 274, 277. _cernua_ Schum., 59, 75. _chrysosperma_ (Bull.) Rost., 272. _cinerea_ Bull., 254. _circumscissa_ Wallr., 241. _clavata_ Pers., 264. contorta (_Ditm._) _Rost._, 269. decipiens (_Pers._) _Macbr._, 276. erecta _Rex_, 276. _fallax_ Pers., 276. favoginea (_Batsch_) Pers., 272. _flagellifera_ Berk. & Br., 258. _fragilis_ (Sowb.) Rost., 274, 277. inconspicua _Rost._, 263. iowensis _Macbr._, 269. _jackii_ Rost., 271. lateritia _Lev._, 277. _leucopodia_ Bull., 186. _nana_ Mass., 261. _nigripes_ Pers., 270. _nitens_ Lib., 280. _nutans_ Bull., 249. _ovata_ Pers., 261. persimilis _Karst._, 271. _proximella_ Karst., 271. pulchella _Rex_, 273. _pusilla_ Schroet., 280. _pyriformis_ Fr., 274. _reniformis_ Peck, 269. _rubiformis_ Pers., 262. scabra _Rost._, 271. _serpula_ (Scop.) Pers., 260. subfusca _Rex_, 275. _typhoides_ Bull., 181. varia (_Pers._) _Rost._, 270. verrucosa _Berk._, 273.
TUBIFERA, 205. casparyi (_Rost._) _Macbr._, 207. ferruginosa (Batsch) _Macbr._, 206. stipitata (_B. & R._) _Macbr._, 207.
=_Tubulina_=, 155. _cylindrica_ (Bull.) DC., 206. _fragiformis_ (Pers.) List., 206. _stipitata_ (Berk. & Rav.) Rost., 207.
PLATES
TO ILLUSTRATE
NORTH AMERICAN SLIME-MOULDS
NOTE.--Plates I., II., IV., VI., VII., VIII., IX., X., were originally by MISS MARY P. MACBRIDE; Plates V., XI., XII., were by MRS. HATTIE J. DOUGLASS; Plates XIII., XIV., XV., XVI., XVII., were by the late MRS. BERTHA E. LINDER PUMPHREY; Plate III. was the joint work of MRS. PUMPHREY and MISS MACBRIDE. All these, except IV., have been re-drawn for new plates; XVI., with additions, by MISS MARGARET HAYES; the remainder by MR. W. J. CALVIN, C. E. Plate XVIII. is by MISS HAYES; Plate XIX. by Miss A. M. HELD; Plate XX. by MISS JANE COVENTRY.
EXPLANATION OF PLATE I
_Enteridium splendens_ Morg., p. 211.
Fig. 1. Aethalium, natural size.
Fig. 1 _a_. Spore of the same species, x 1400.
Fig. 1 _b_. Capillitium of the same species, x 420.
_Dictydiaethalium plumbeum_ (Fr.) Rost., p. 215.
Fig. 2. Aethalium, natural size.
Fig. 2 _a_. Sporangia and spores, x 50 (after Schroeter).
Fig. 2 _b_. Persistent apices of the peridia.
_Lindbladia effusa_ (Ehr.) Rost., p. 204.
Fig. 3. A group of sporangia, x 30.
Fig. 3 _a_. A single spore, x 1400.
_Tubifera ferruginosa_ (Batsch) Macbr., p. 206.
Fig. 4. A group of sporangia, x 5.
See also Plate VII., Fig. 8; and Plate XII., Fig. 14.
_Cribraria dictydioides_ Cke. & Balf., p. 222.
Fig. 5. Three sporangia, x 15.
Fig. 5 _a_. A single sporangium, to show reticulate thickening, x 60.
Fig. 5 _b_. A spore, x 1400.
_Dictydium cancellatum_ (Batsch) Macbr., p. 230.
Fig. 6. Sporangium, x 30.
Fig. 6 _a_. A part of the peridial wall, seen from within, x 84.
_Ceratiomyxa fruticulosa_ (Muell.) Macbr., p. 19.
Fig. 7. Three sporiferous pillars, x about 40.
Fig. 7 _a_. Tip of a single pillar, x 84.
_Hemitrichia stipata_ (Schw.) Macbr., p. 262.
Fig. 8. Sporangia, x 6.
Fig. 8 _a_. The capillitium of the same species, x 750.
Fig. 8 _b_. A single spore, x 1000.
EXPLANATION OF PLATE II
_Perichaena corticalis_ (Batsch) Rost., p. 243.
Fig. 1. Sporangia, x 10.
Fig. 1 _a_. A single spore, as if in section, x 900.
Fig. 1 _b_. The capillitial thread, x 750.
_Lachnobolus occidentalis_ Macbr., p. 246.
Fig. 2. The sporangia, x 8.
Fig. 2 _a_. A portion of the capillitium, x 750.
Fig. 2 _b_. Spores, x 750.
See also 4 and 4 a below.
_Arcyria cinerea_ (Bull.) Pers., p. 254.
Fig. 3. The expanded fructifications, x 5.
Fig. 3 _a_. Tip of a single capillitium mass, x 40.
_Lachnobolus occidentalis_ Macbr., p. 246.
Fig. 4. A cluster of sporangia, x 3; cylindric type.
Fig. 4 _a_. Capillitium, x 750; to show characteristic surface of the threads.
_Arcyria denudata_ (Linn.) Pers., p. 253.
Fig. 5. Sporangia, two expanded, one still closed, x 20.
Fig. 5 _a_. A part of the capillitium of the same species, x 750.
_Arcyria nutans_ (Bull.) Grev., p. 249.
Fig. 6. Expanded capillitium, etc., x 10.
Fig. 6 _a_. Capillitium, x 750.
Fig. 6 _b_. A piece of the capillitium thread, x 1400.
_Ophiotheca wrightii_ Berk. & C., p. 241.
Fig. 7. A single sporangium, x 8.
Fig. 7 _a_. A node of the capillitial thread, x 750.
Fig. 7 _b_. A spore, x 750.
_Oligonema nitens_ (Lib.) Rost., p. 280.
Fig. 8. A single elater, x 750.
Figs. 8 _a_ and 8 _b_. Spores, x 1000.
_Badhamia macrocarpa_ Rost., p. 37.
Var. _gracilis_.
Fig. 9. Two sporangia, x 600.
EXPLANATION OF PLATE III
_Hemitrichia clavata_ (Pers.) Rost., p. 264.
Fig. 1. Three sporangia, one closed, x 8.
Fig. 1 _b_. A single spore, x 1400.
_Hemitrichia vesparium_ (Batsch) Macbr., p. 262.
Fig. 2. Tip of the elater of capillitial thread, x 1400.
Fig. 2 _a_. A single spore, x 1400.
_Trichia iowensis_ Macbr., p. 269.
Fig. 3. A cluster of sporangia, x 5.
Fig. 3 _a_. Tip of a branching elater, x 750.
Fig. 3 _b_. A single spore, x 750.
See also Plate X., Fig. 5.
_Hemitrichia serpula_ Scop., p. 260.
Fig. 4. A plasmodiocarp, x 3.
Fig. 4 _a_. A single spore, x 1400.
Fig. 4 _b_. An elater-tip, x 1400.
_Trichia inconspicua_ Rost., p. 268.
Fig. 5. A cluster of sporangia, x 12.
Fig. 5 _a_. Tip of an elater, x 1400.
Fig. 5 _b_. A single spore, x 750.
_Physarum oblatum_ Macbr., p. 91.
Fig. 6. A single sporangium, x 20; stipe shown of unusual length.
Fig. 6 _a_. A single spore, x 1000.
See also Plate XIV., Fig. 3.
_Physarum auriscalpium_ (Cke.) Lister, p. 90.
Fig. 7. A single sporangium, x 20; a New York specimen.
Fig. 7 _a_. A single spore, x 1000.
_Arcyria nodulosa_ Macbr., p. 252.
Fig. 8. Capillitial thread, x 1200.
EXPLANATION OF PLATE IV
_Trichia persimilis_ Karst., p. 271.
Fig. 1. Var. intermedia, x about 6.
Fig. 1 _a_. Spore of same species, x 1400.
Fig. 1 _b_. A second spore to show varying episporic network.
Fig. 1 _c_. Tip of elater, shows vertical connecting bands.
_Trichia decipiens_ (Pers.) Macbr., p. 276.
Fig. 2. Sporangia, x about 8.
Fig. 2 _a_. A spore of the same species, x 1400.
Fig. 2 _b_ and 2 _c_. Elaters of the same species, x about 225.
_Trichia varia_ (Pers.) Rost., p. 270.
Fig. 3. Sporangia, x about 8.
Fig. 3 _a_. A spore of the same species, x 1000.
Fig. 3 _b_. An elater of the same species, x 750.
_Trichia scabra_ Rost., p. 271.
Fig. 4. Sporangia, x about 8.
Fig. 4 _a_. A single spore of the same species, x 1400.
Fig. 4 _b_. An elater-tip of the same, x 1400.
_Trichia favoginea_ (Batsch) Pers., p. 272.
Fig. 5. Sporangia, x about 8.
Fig. 5 _a_. A single spore of the same, x 1400.
Fig. 5 _b_. A single elater-tip of the same, x 1400.
_Trichia persimilis_ Karst., var _abrupta_ Cke., p. 271.
Fig. 6. An elater-tip, x 1400. It will be noticed that the spirals are connected by vertical bars.
Fig. 6 _a_. A single spore of the same variety, x 1400.
Fig. 6 _b_. A single spore, from the same sporangium as 6 _a_.
Fig. 6 _c_. Trichia persimilis, a single spore, x 1400.
Fig. 6 _d_. Tip of an elater from the same, x 1400.
EXPLANATION OF PLATE V
_Lamproderma arcyrionema_ Rost., p. 197.
Fig. 1. A single sporangium seen as if in section, x 40.
Fig. 1 _a_. A single spore, x 1400.
_Lamproderma scintillans_ (Berk. & Br.) List., p. 195.
Fig. 2. A single sporangium seen as in section, x 40.
Fig. 2 _a_. A single spore, x 1400.
_Enerthenema papillatum_ (Pers.) Rost., p. 190.
Fig. 3. An expanded, blown-out sporangium, x 25.
_Lamproderma robustum_ Ell. & Ev., p.
Fig. 4. A sporangium seen as in section, x 20.
Fig. 4 _a_. A single spore, x 1000.
_Comatricha laxa_ Rost., p. 177.
Fig. 5. A sporangium seen as if in section, x 40.
Fig. 5 _a_. A single spore, x 2000.
_Diachaea thomasii_ Rex, p. 188.
Fig. 6. Three sporangia magnified about 15 times.
Fig. 6 _a_. A single spore of the same species, x 800.
_Brefeldia maxima_ (Fries) Rost., p. 154.
Fig. 7. A group of sporangia, showing columellae; x 5.
Fig. 7 _a_. Capillitial threads of the same species, x 300.
Fig. 7 _b_. Spore of the same species, x 1500.
_Amaurochaete fuliginosa_ (Sowb.) Macbr., p. 149.
Fig. 8. A bit of so-called capillitium, x 300.
Fig. 8 _a_. A single spore magnified about 1000 times.
EXPLANATION OF PLATE VI
_Comatricha typhoides_ (Bull.) Rost., p. 181.
Fig. 1. A group of sporangia, x 5.
Fig. 1 _a_. A single spore, x 1600.
Fig. 1 _b_. Tip of the columella with its branches, x 50.
_Comatricha longa_ Peck, p. 175.
Fig. 2. A single empty sporangium, x 6.
Fig. 2 _a_. A part of the same taken near the apex, x 60.
Fig. 2 _b_. A spore, x 1400.
_Comatricha aequalis_ Peck, p. 180.
Fig. 3. A single sporangium, x 10.
Fig. 3 _a_. The columella and capillitium, x 60.
Fig. 3 _b_. A single spore, x 1600.
Figs. 3 _c_ and 3 _d_. Sporangia to which the peridium still adheres, although in 3 _c_ in shreds.
_Stemonitis fusca_ Rost., p. 160.
Fig. 4. A group of sporangia, x 3.
Fig. 4 _a_. A part of the columella and capillitium, x 60.
Fig. 4 _b_. A single spore, x 1400.
_Stemonitis axifera_ (Bull.) Macbr., p. 168.
Fig. 5. A group of sporangia, x 3.
Fig. 5 _a_. A single spore, x 1400.
Fig. 5 _b_. A part of the capillitium with columella, x 60.
_Stemonitis splendens_, p. 164.
Fig. 6. A group of sporangia, x 3.
Figs. 6 _a_ and 6 _c_. Single spores, the latter x 1400.
Fig. 6 _b_. A part of the columella and branches, x 60.
Fig. 7. A shorter variety of the same species with coarser meshes in capillitium, x 3.
Fig. 7 _a_. A part of the columella and net, x 60.
EXPLANATION OF PLATE VII
_Diachaea splendens_ Peck, p. 187.
Fig. 1. Sporangia and hypothallus, x 25.
Fig. 1 _a_. Capillitium, x 50.
Fig. 1 _b_. Spores, x 900.
Fig. 1 _c_. Portion of the capillitium, x 150.
_Didymium nigripes_ Fr., p. 123.
Fig. 2. Sporangia, x 30.
Fig. 2 _a_. A spore, x 1400.
Fig. 2 _b_. Calcareous crystals from the peridial wall, x 750.
_Didymium melanospermum_ (Pers.) Macbr., p. 121.
Fig. 3. Sporangia, x 10.
Fig. 3 _a_. A single spore, x about 1000.
_Diderma testaceum_ (Schrad.) Pers., p. 137.
Fig. 4. Sporangia; the first exhibiting the two peridial walls and the spore-mass, x 10.
Fig. 4 _a_. Spore, x 750.
Fig. 4 _b_. Capillitial threads, x 750.
_Diderma globosum_ Pers., p. 134.
Fig. 5. Sporangia; the first with the outer peridium broken away, x 10.
Fig. 5 _a_. A single spore, x 750.
_Mucilago spongiosa_ (Leyss.) Morg., p. 114.
Fig. 6. An aethalium, borne on a grass-stem, natural size.
Fig. 6 _a_. A spore, x 750.
Fig. 6 _b_. Capillitium, with surface calcareous crystals, x 750.
_Diderma crustaceum_ Peck, p. 135.
Fig. 7. A mass of clustered sporangia, to show habit of aggregation, natural size.
_Tubifera ferruginosa_ (Batsch) Macbr., p. 206.
Fig. 8. A single spore, x 1400.
EXPLANATION OF PLATE VIII
_Diderma floriforme_ (Bull.) Pers., p. 143.
Fig. 1. Sporangia of various ages, x 5.
Fig. 1 _a_. Spore of the same species, x 1000.
Fig. 1 _b_. A capillitial thread, x 1000.
_Physarum polycephalum_ Schw., p. 95.
Fig. 2. The sporangia, x 10.
Fig. 2 _a_. Spores, x 750.
Fig. 2 _b_. Capillitium, x 750.
_Leocarpus fragilis_ (Dicks.) Rost., p. 112.
Fig. 3. Sporangia, x 6.
Fig. 3 _a_. A group of sporangia, natural size, to show habit.
Fig. 3 _b_. A single spore, x 1800.
_Physarella oblonga_ (Berk. & C.) Morg., p. 109.
Fig. 4. A single sporangium, x 8.
Figs. 4 _a_ and 4 _b_. Capillitium and spore respectively, x 900.
_Craterium leucocephalum_ (Pers.) Ditmar, p. 105.
Fig. 5. Sporangia, the first closed, x 10.
_Physarum sinuosum_ (Bull.) Weinm., p. 52.
Fig. 6. Plasmodiocarp, natural size; 6 _a_, x 4; see also Plate XIX., Fig. 15.
_Physarum virescens_ Ditmar, p. 61.
Fig. 7. Groups of sporangia, x 3 and x 8.
Fig. 7 _a_. Spores, x 750.
_Physarum viride_ Pers., p. 98.
Fig. 8. A single sporangium, x 25; 8 _a_, reverse.
Fig. 8 _b_. The same after spore-dispersal.
Fig. 8 _c_. Capillitium, x 750.
EXPLANATION OF PLATE IX
_Physarum didermoides_ (Ach.) Rost., p. 78.
Fig. 1. Sporangia, x 15.
Fig. 1 _a_. A single sporangium open; shows calcareous capillitium, x 15.
Fig. 1 _b_. Spores, x 900.
_Physarum notabile_ Macbr., p. 80.
Fig. 2. A cluster of sporangia, x 15.
Fig. 2 _a_. A single sporangium open, x 15.
Fig. 2 _b_. Spores, x 900.
See also Plate XV., Figs. 2, 2 _a_, and the frontispiece.
_Physarum contextum_ Pers., p. 56.
Fig. 3. A group of sporangia, x 15.
Fig. 3 _a_. Spores of the same, x 600.
_Physarum cinereum_ (Batsch) Pers., p. 59.
Fig. 4. A group of sporangia, x 4.
Fig. 4 _a_. A single sporangium, x 20.
Fig. 4 _b_. Capillitium of the same, x 240.
Fig. 4 _c_. Spores, x 450.
_Physarum albescens_ Ellis, p. 86.
Fig. 5. Sporangia, x 5.
See also Plate XVI., Figs. 4 and 4 _a_.
Fig. 5 _a_. Spore of the same species, x 450.
Fig. 5 _b_. Capillitium of the same, x 240.
_Physarum serpula_ Morg., p. 49.
Fig. 6. Plasmodiocarps, about natural size.
Fig. 6 _a_. A bit of the plasmodiocarp, showing structure, x 6.
Fig. 6 _b_. A spore of the same species, x 1400.
_Physarum leucopus_ Link., p. 79.
Fig. 7. A single sporangium, x 15.
Fig. 7 _a_. A spore of the same species, x 900.
Fig. 7 _b_. A fragment of the capillitium.
EXPLANATION OF PLATE X
_Badhamia rubiginosa_ (Chev.) Rost., p. 43.
Fig. 1. A group of sporangia, x 5.
Fig. 1 _a_. Two sporangia, same species, x 18, to show persisting capillitium.
Fig. 1 _b_. Capillitium fragment, x 240.
Fig. 1 _c_. Spore of the same species, x 750.
_Fuligo septica_ (L.) Gmel.; form _laevis_, p. 29.
Fig. 2. An aethalium, natural size.
Fig. 2 _a_. A section of the same, x 10.
Fig. 2 _b_. A spore of the same, x 750.
_Fuligo cinerea_ Pers., p. 26.
Fig. 3. A small aethalium borne upon a blade of grass, natural size.
See also Plate XXIII.
Fig. 3 _a_. Capillitial fragment from the same specimen, x 450.
Fig. 3 _b_. Spores of the same, x about 750.
_Didymium minus_ List., p. 121.
Fig. 4. A single sporangium, x 25.
Fig. 4 _a_. The capillitium and fragment of the peridium of the same species, x 380.
Fig. 4 _b_. A spore of the same species, x 1000.
_Trichia iowensis_ Macbr., p. 269.
Fig. 5. Tip of an elater, x 1400.
See also Plate III, 3, 3 _a_, 3 _b_.
_Badhamia papaveracea_ Berk. & Rav., p. 42.
Fig. 6. Sporangia, a cluster, x 8.
Fig. 6 _a_. A cluster of spores, x 400.
Fig. 6 _b_. A single spore of the same, x 1400.
_Reticularia lycoperdon_ Bull., p. 210.
Fig. 7. A fragment of the capillitium, x 240.
Fig. 7 _a_. A single spore of the same species, x 1400.
See also Plate XII., Fig. 3.
EXPLANATION OF PLATE XI
_Comatricha nigra_ Pers., p. 178.
Fig. 1. A group of sporangia, x 10.
Fig. 2. A single sporangium as in section, x 60.
Fig. 3. A single spore, x 1600.
_Stemonitis confluens_ Ell. & Cke., p. 158.
Fig. 4. A group of sporangia, x 10.
Fig. 4 _a_. A thread of capillitium with adhering disk, x 30.
Fig. 5. A spore of the same, x 2000.
_Stemonitis webberi_ Rex, p. 163.
Fig. 6. A group of sporangia, x 4.
Fig. 7. A single sporangium as in section, x 40.
Fig. 8. A single spore, same species, x 1250.
_Comatricha suksdorfii_ Ell. & Ev., p. 178.
Fig. 9. A group of sporangia, x 4.
Fig. 10. A bit of the capillitium, x 60.
Fig. 11. A single spore, x 1600.
_Comatricha caespitosa_ Sturg., p. 172.
Fig. 12. A cluster of sporangia, x 4.
Fig. 13. The capillitium highly magnified.
Fig. 14. A single spore, x 1600.
EXPLANATION OF PLATE XII
_Lindbladia effusa_ (Ehr.) Rost., p. 204.
Fig. 1. Fructification, natural size.
Fig. 2. Portion of same in section, x 3.
_Reticularia lycoperdon_ Bull., p. 210.
Fig. 3. Residual capillitial structure, the spores blown away; about natural size.
_Enteridium splendens_ Morg., p. 211.
Fig. 4. Fructification, a large one, natural size.
Fig. 5. Same in section, x 3.
_Arcyria ferruginea_ Sauter, p. 253.
Fig. 6. Three sporangia, magnified about 10 times.
Fig. 6 _a_. A single spore, magnified.
Fig. 6 _b_. Capillitial thread.
_Licea variabilis_ Schrad., p. 200.
Fig. 7. Sporangia, magnified about 6 times.
Fig. 8. Spore, magnified to show surface characters.
_Tubifera casparyi_ (Rost.) Macbr., p. 207.
Fig. 9. A group of sporangia; shows the pseudo-columellae; x about 5.
_Licea biforis_ Morg., p. 201.
Fig. 10. Sporangia dehiscent, magnified about 10 times.
_Orcadella operculata_ Wing., p. 203.
Fig. 11. Sporangia, magnified about 30 times.
_Cribraria argillacea_ Pers., p. 218.
Fig. 12. Sporangia, magnified about 10 times.
Fig. 13. A single sporangium, x about 40.
See also Plate XVII., Fig. 1.
_Tubifera ferruginosa_ (Batsch) Macbr., p. 206.
Fig. 14. Sporangia magnified to show apiculate tops. Cf.
_Comatricha ellisii_ Morg., p. 184.
Fig. 15. Sporangium, x 40.
Fig. 15 _a_. A single spore, x 1000.
_Comatricha pulchella_ (Bab.) Rost, p. 183; vid. p. 284.
Fig. 16. Sporangium, x 20.
Fig. 16 _a_. A single spore, x 1000.
_Comatricha subcaespitosa_ Peck, p. 185.
Fig. 17. Sporangium, x 20.
Fig. 17 _a_. A single spore, x 1000.
_Comatricha gracilis_ Wingate, p. 183.
Fig. 18. Sporangium, x 20.
Fig. 18 _a_. A single spore, x 1000.
EXPLANATION OF PLATE XIII
_Heterotrichia gabriellae_ Mass., p. 257.
Fig. 1. A group of sporangia, one expanded, the others empty, x 15.
Fig. 1 _a_. Capillitium of the species, x 600.
_Calonema aureum_ Morg., p. 266.
Fig. 2. A cluster of sporangia, magnified about 15 times.
Fig. 2 _a_. The tip of an elater of the same species, x 1000.
Fig. 2 _b_. A single spore, x 1000.
Fig. 2 _c_. A bit of the sporangium wall, x 600.
_Stemonitis pallida_ Wing., p. 169.
Fig. 3. Sporangia, magnified about 5 times.
_Comatricha pulchella_ (Bab.) Rost., form _C. persoonii_ R., p. 183.
Fig. 4. Sporangia, magnified about 15 times.
See Addenda, d, p. 283.
_Stemonitis carolinensis_ Macbr., p. 170.
Fig. 5. Sporangia, magnified about 5 times.
_Clastoderma debaryanum_ Blytt., p. 191.
Fig. 6. Sporangium, magnified about 60 times.
_Trichia contorta_ Rost., p. 269.
Fig. 7. Tip of an elater, x 1400.
Fig. 7 _a_. Spore of the same species, x 1400.
_Trichia botrytis_ Pers., p. 274.
Fig. 8. Tip of the elater, x 1400.
Fig. 8 _a_. Spore of the same species, x 1400.
EXPLANATION OF PLATE XIV
_Badhamia magna_ Peck., p. 38.
Fig. 1. A cluster, of sporangia, x 10.
_Cienkowskia reticulata_ (Alb. & Schw.) Rost., p. 111.
Fig. 2. Plasmodiocarp, x 15.
Fig. 2 _a_. A bit of the capillitium of the same, x 800.
Fig. 2 _b_. A single spore, x 1000.
_Physarum oblatum_ Macbr., p. 91.
Fig. 3. Sporangia, x 15.
Fig. 3 _a_. A piece of capillitium, x 800.
Fig. 3 _b_. A single spore, x 1000. The roughness much exaggerated.
_Badhamia orbiculata_ Rex., p. 37.
Fig. 4. A group of sporangia, x 10.
_Physarum newtoni_ Macbr., p. 73.
Fig. 5. A group of sporangia, x 16.
Fig. 5 _a_. A single spore, x 1000.
Fig. 5 _b_. A bit of the capillitium, x 800.
_Physarum maculatum_ Macbr., p. 77.
Fig. 6. A cluster of sporangia, x 10.
Fig. 6 _a_. A piece of the capillitial net, x 800.
Fig. 6 _b_. A single spore, x 800.
_Lepidoderma tigrinum_ (Schrad.) Rost., p. 145.
Fig. 7. A group of sporangia, x 20.
EXPLANATION OF PLATE XV
_Physarum confertum_ Macbr. _n. n._, p. 64.
Fig. 1. Sporangia on a bit of leaf, x 4.
Fig. 1 _a_. Capillitium, x 800.
Fig. 1 _b_. A single spore, x 1200.
_Physarum notabile_ Macbr., p. 80.
Fig. 2. A group of sporangia, stipitate form, x 10.
Fig. 2 _a_. A single spore, x 1200.
_Physarum flavicomum_ Berk., p. 93.
Fig. 3. A cluster of sporangia, one closed, x 10.
Fig. 3 _a_. A single spore, x 1200.
_Physarum tropicale_ Macbr., p. 82.
Fig. 4. Sporangia, x 10.
Fig. 4 _a_. Capillitium, x 800.
Fig. 4 _b_. A single spore, x 1200.
_Craterium minutum_ (Leers) Fr., p. 107.
Fig. 5. Sporangia, the stalks unusually long, x 15.
_Physarum penetrale_ Rex, p. 70.
Fig. 6. A group of sporangia; the calcareous crust has fallen in all.
Fig. 6 _a_. A single sporangia, enlarged to show columella, x 20.
_Physarum nicaraguense_ Macbr., p. 83.
Fig. 7. A group of sporangia, x 15.
Fig. 7 _a_. Capillitium, strongly calcareous, x 800.
Fig. 7 _b_. A single spore, x 1200.
See also Pl. XVII., Figs 11 and 11 _a_.
EXPLANATION OF PLATE XVI
_Physarella oblonga_ (Berk. & C.) Morgan, p. 109.
Fig. 1. Fully opened sporangium, x 10.
Fig. 1 _a_. Tubular sporangia closed, x 5.
Fig. 1 _b_. Transverse section of sporangium; shows trabecular calcareous nodules of the capillitium, x 15.
_Craterium cylindricum_ Mass., p. 106.
Fig. 2. Group of sporangia, x 10.
_Physarum wingatense_ Macbr., p. 72.
Fig. 3. Group of sporangia, x 10.
_Physarum albescens_ Ellis, p. 86.
Fig. 4. Group of sporangia, x 10.
Fig. 4 _a_. Capillitium of the same species, x 200.
_Dianema harveyi_ Rex, p. 238.
Fig. 5. Group of sporangia, x 10.
Fig. 5 _a_. Clustered spores, D. corticatum, x 500.
Fig. 5 _b_. Capillitial threads and spores, D. harveyi, x 200.
Fig. 5 _c_. Twisted, spirally striate single threads, x 500; _D. corticatum_, List.
_Physarella oblonga_ Berk. & C., p. 109.
Fig. 6. Terrestial, plasmodiocarpous phase, x 10.
_Physarum megalosporum_ Sturg., p. 63.
Fig. 7. Group of sporangia, x 8.
Fig. 7 _a_. Capillitium and spores, x 150.
_Didymium complanatum_ (Batsch) Rost., p. 116.
Fig. 8. Capillitial structure, x 200.
_Physarum wingatense_, p. 72.
Fig. 9. Sporangium, x 20, enlarged to show dehiscence.
_Didymium xanthopus_ (Ditm.) Fr., p. 123.
Fig. 10. Sporangium--diagram to show columella, x 20.
_Didymium eximium_ Pk., p. 124.
Fig. 11. Group of sporangia, x 10.
Fig. 11 _a_. Section of sporangium, x 30; diagram.
Fig. 11 _b_. Spore, x 750.
Comatricha elegans (Racib.) List., p. 182.
Fig. 12. A single sporangium, x 20.
Clastoderma debaryanum, p. 191.
Fig. 13. Sporangium, seen in section, x 20.
Stemonitis herbatica Pk., p. 171.
Fig. 14. Group of sporangia, x 2.
Fig. 14 a. The same enlarged to show general outline.
Fig. 14 b. The same; capillitial section, x 20.
Fig. 14 c. A single spore, x 1000.
EXPLANATION OF PLATE XVII
_Cribraria argillacea_ (Pers.) Schrad., p. 218.
Fig. 1. Sporangium, highly magnified.
_Cribraria macrocarpa_ Schrad., p. 219.
Fig. 2. Sporangium, highly magnified.
_Cribraria aurantiaca_ Schrad., p. 221.
Fig. 3. Sporangium containing spores, x 30.
_Cribraria microcarpa_ Schrad., p. 226.
Fig. 4. Sporangium containing spores, x 30.
_Cribraria tenella_ Schrad., p. 225.
Fig. 5. Sporangium containing spores, x 40.
_Cribraria minutissima_ Schw., p. 220.
Fig. 6. A single sporangium calyculate, x 50.
Fig. 6 _a_. A smaller sporangium without calyx, with spore-mass.
_Cribraria cuprea_ Morg., p. 229.
Fig. 7. A single sporangium, x 50.
_Cribraria violacea_ Rex, p. 227.
Fig. 8. A single sporangium, x 40.
_Cribraria piriformis_ Schrad., p. 224.
Fig. 9. A single sporangium, x 30.
_Perichaena depressa_ (Libert) Rost., p. 242.
Fig. 10. A cluster of sporangia, one open, x 8.
_Physarum nicaraguense_ Macbr., p. 83.
Fig. 11. Single sporangium, x 10.
Fig. 11 _a_. A cluster of sporangia and hypothallus, x 5.
EXPLANATION OF PLATE XVIII
_Margarita metallica_ (Berk. & Br.) List., p. 237.
Fig. 1. A group of sporangia, x 15.
Fig. 1 _a_. Capillitium and spores, x 300.
Fig. 1 _b_. A single spore, x 1200.
_Diderma cor-rubrum_ n. s., p. 140.
Fig. 2. A group of sporangia, x 15.
_Diderma asteroides_ List., p. 143.
Fig. 3. Sporangia-spread, x 6.
Fig. 3 _a_. Same sporangia still unopened, x 4.
_Comatricha laxa_ Rost., Cf. Pl. V., 5 & 5 _a_, p. 184.
Fig. 4. Sporangia, x 10.
_Diderma lyallii_ (Mass.) Macbr., p. 136.
Fig. 5. A group of sporangia, x 10.
Fig. 5 _a_. Capillitium and spores, x 200.
_Lepidoderma chailletii_ Rost., p. 146.
Fig. 6. A group of sporangia, x 15.
Fig. 6 _a_. Capillitium and spores, x 150.
Fig. 6 _b_. A single spore, x 800.
_Didymium anellus_ Morg., p. 117.
Fig. 7. A group of sporangia, x 10.
_Diderma radiatum_ Linn., p. 141.
Fig. 8. A group of sporangia, x 8.
_Physarum diderma_ Rost., p. 55.
Fig. 9. A group of sporangia, x 10.
_Diderma rugosum_ (Rex) Macbr., p. 144.
Fig. 10. A group of sporangia, x 10.
_Diderma niveum_ (Rost.) Macbr., p. 137.
Fig. 11. A group of sporangia, x 10.
Fig. 11 _a_. Spore and Capillitium, x 600.
_Prototrichia metallica_ (Berk.) Mass., p. 258.
Fig. 12. A group of sporangia, x 10.
Fig. 12 _a_. Same; capillitium and spores, x 300.
Fig. 12 _b_. Tip of a capillitium thread to show spiral markings and end-fraying, x 800.
_Comatricha aequalis_ Peck, p. 180.
Fig. 13. A group of sporangia, x 5.
Fig. 13 _a_. Sporangium tip, capillitium, x 200.
Fig. 13 _b_. Spore, x 800.
_Physarum compressum_ Alb. & Schw., p. 80.
Fig. 14. A group of sporangia to show compressed form, x 10.
See also Plate XIX., Fig. 12.
EXPLANATION OF PLATE XIX
_Dictydium cancellatum_ Batsch, p. 230.
Fig. 1. The finest phase, as the form appears in the Mississippi valley, x 15.
Fig. 1 _a_. Sporangium of the same seen from below, x 35.
Fig. 1 _b_. Sporangium--same--seen from above, x 35.
Fig. 1 _c_. Cribraria-like net from the top, x 200.
Fig. 2. Vertical section of what is believed the typical European form, x 20.
Fig. 3. An ellipsoidal piriform phase--var. _prolatum_, x 15.
_Physarum compressum_ Alb. & Schw. form _P. affine_ Rost., p. 80.
Fig. 4. A group of sporangia, x 12.
Fig. 4 _a_. A single spore, x 600.
Fig. 4 _b_. Capillitium, same species, x 300.
_Alwisia bombarda_ Berk. & Br., p. 209.
Fig. 5. Open sporangia, x 6.
Fig. 5 _a_. Sporangium of same enlarged to show capillitium, x 20.
_Cribraria dictydiodes_ Cke. & Balf., p. 222.
Fig. 6. A group of sporangia, x 6.
Fig. 6 _a_. Single sporangium of same--lateral view, x 25.
Fig. 6 _b_. Same; base view, x 30.
_Cribraria aurantiaca_ Schrad., p. 221.
Fig. 7. Single sporangium, x 30.
_Cribraria rufa_ (Roth) Rost., p. 220.
Fig. 8. Sporangium, x 30.
_Cribraria piriformis_ Schrad., p. 224.
Fig. 9. Sporangium, x 30.
_Cribraria splendens_ (Schrad.) Pers., p. 221.
Fig. 10. Sporangium, x 30.
_Echinostelium minutum_ DeBy., p. 198.
Fig. 11. Several sporangia, x 15.
Fig. 11 _a_. Vertical section, after Rost., x 500.
_Physarum compressum_ Schw., p. 80.
Fig. 12. Sporangium, x 20, to show dehiscence.
_Didymium anomalum_ Sturg., p. 127.
Fig. 13. Plasmodiocarps, about natural size.
Fig. 13 _a_. Diagrammatic vertical section, etc., to show the calciferous pillars distinguishing the species, x 200.
Fig. 14. Calcic crystal--enlarged.
_Physarum sinuosum_ (Bull.) Weinm., p. 52.
Fig. 15. Plasmodiocarps passing to sporangia, x 5.
Cf. Plate VIII., 6 and 6 _a_.
_Physarum bitectum_ List., p. 53.
Fig. 16. Plasmodiocarps as in 15, showing transitional phases, x 10.
EXPLANATION OF PLATE XX
_Badhamia iowensis_ n. s., p. 36.
Fig. 1. Sporangia several presentations, x 15.
Fig. 1 _a_. Capillitium, x 200.
Fig. 1 _b_. Single spore, x 500.
_Physarum mortoni_ n. s., p. 58.
Fig. 2. A group of sporangia, x 20.
Fig. 2 _a_. Capillitium, x 200.
_Physarum discoidale_ n. s., p. 74.
Fig. 3. A group of sporangia, x 10.
Fig. 3 _a_. A single spore, x 800.
_Didymium annulatum_ n. s., p. 125.
Fig. 4. Group of sporangia, x 15.
Fig. 4 _a_. Capillitium and spores, x 200.
_Oligonema brevifilum_ Peck, p. 280.
Fig. 5. Capillitium, x 800.
Fig. 5 _a_. The same.
Fig. 12 _b_. A single spore, x 800.
_Amaurochaete tubulina_ (Alb. & Schw.) Macbr., p. 150.
Fig. 6. Capillitium and spores, x 200.
Fig. 6 _a_. Spore, x 1200.
_Physarum brunneolum_ (Phill.) Mass., p. 58.
Fig. 7. Group of sporangia.
Fig. 7 _a_. The same, mature, dehiscence beginning, x 10.
Fig. 7 _b_. A single spore, x 800.
_Stemonitis uvifera_ n. s., p. 161.
Fig. 8. Colony, natural size.
Fig. 8 _a_. Capillitium and spore-clusters, x 30.
Fig. 8 _b_. Single spore-cluster, x 600.
Fig. 8 _c_. Spore, x 1000.
_Stemonitis trechispora_ Berk., p. 160.
Fig. 9. Fructification--natural size.
Fig. 9 _a_. Capillitium, branch and threads, x 20--the spores enlarged.
Fig. 9 _b_. Netted spore, x 1000. Masking as an amaurochete; _A. trechispora_ perhaps; compare 11, etc., below.
_Stemonitis flavogenita_ Jahn, p. 169.
Fig. 10. A group of sporangia, x 3.
Fig. 10 _a_. Capillitium showing columella-tip, x 50.
Fig. 10 _b_. Spore, x 1200.
_Stemonitis trechispora_ (Berk.) Torr., p. 159.
Fig. 11. A group of sporangia, x 3.
Fig. 11 _a_. Diagram of a single sporangium, a less rudimentary specimen, x 40.
Fig. 11 _b_. Capillitium enlarged to show branching columella, x 40.
Fig. 11 _c_. A single spore, x 1200.
_Arcyria pomiformis_ (Leers) Rost., p. 255.
Fig. 12. A globose colony of sporangia, x 10; var. _conglobosa_.
Fig. 12 _b_. See under 5, above.
EXPLANATION OF PLATE XXI
Brefeldia maxima (Fr.) Rost., p. 154.
A typical, beautiful aethalium, about natural size.
EXPLANATION OF PLATE XXII
_Brefeldia maxima_ Rost., p. 154.
Fig. 1. Plasmodium active; climbing the stump.
Fig. 2. Same plasmodium urgent; moving at the rate of 2 cm. per hour.
From photo-prints by Mr. W. A. Seaman and Mr. John T. Reeder, Mich. The figures are about one-sixth the natural size of the object. See plate preceding for the mature phase of this species, natural size.
EXPLANATION OF PLATE XXIII
_Fuligo rufa_ (Schw.) Pers., p. 28.
1. The plasmodium; urgent!
2. The perfected fruit; quiescent.
The figures present their objects about natural size. See also Plate X., Figs. 3, 3 _a_, 3 _b_, for further illustration.
From photo-prints by John T. Reeder, Mich.
* * * * * *
Transcriber's note:
Many apparent spelling errors are in fact published synonyms and remain as printed.
The 'Corrigenda' or errata changes are entered.
Page 11. 'of enviroment.' changed 'enviroment' to 'environment.' Page 26 'anon winding,' may be 'and winding,'; unchanged. Page 29 'PLATE X, Figs. 2, 2 _a_, 2 _b_.' added. Page 38 '1892. _Bahamia varia_' as in original; no change. Page 41 'In some case' changed 'case' to 'cases'. Page 46 'leaving his sucessors' as in original; unusual spelling; no change. Page 47 '24. _P. pulcherrinum_' changed 'pulcherrinum' to 'pulcherrimum', to match the referenced paragraph. Page 63 'visible hyphothallus' changed 'hyphothallus' to 'hypothallus'. Page 65 '1873. Dydymium' as in original; no change. Page 78 'sheet-like hyphothallus' changed 'hyphothallus' to 'hypothallus'. Page 79 37. Physarum leucopus _Link_. '37.' missing in original; added. Page 80 'P. affie Rost., Plate XIX., Fig. 4.' changed 'affie' to 'affine'. Page 84 'which has spores 10-12' changed to 'which has spores 10-12 mu'. added ' mu'. Page 98 'PLATE VIII, Figs. 8, 8 _a_, 8 _b_.' added. Page 108 'pendunculatum Trent.,' changed 'pendunculatum' to 'pedunculatum'. Page 110 '=Cienkowskia= _Rost._' changed to '=6. Cienkowskia= _Rost._' '6.' added. Page 114 'PLATE VII, Figs. 6, 6 _a_, 6 _b_.' added. Page 116 _a._ Sporangia discoid, spores reticulate 19. _D. intermedium_ _b._ Stipe, columella, peridium, orange-brown 20. _D. leoninum_ changed to _a._ Sporangia discoid, spores reticulate 18. _D. intermedium_ _b._ Stipe, columella, peridium, orange-brown 19. _D. leoninum_ to match referenced text. Page 130 '7. _D. niveum_' changed '7.' to '8.' Page 149 'cushion is interestingly aborescent' changed 'aborescent' to 'arborescent'. Page 150 AMAUROCHAETE TUBULINA (_Alb. & Schw._) _Macbr._ '2.' added. Page 200 '3. _L. biforis_. '4. _L. minima_'. '5. _L. pusilla_'. changed '3, 4, 5' to '2, 3, 4' respectively to match referenced text. Page 212 'name to ertain English' changed 'ertain' to 'certain'. Page 218 'granules on the calcyulus' changed 'calcyulus' to 'calyculus'. Page 237 '_Prototrichia_ to the _Trichiacae_.' changed 'Trichiacae' to '_Trichiaceae_'. Page 237 Plate XVII., Figs.---- changed 'Figs.----' to 'Figs. 1, 1 _a_, 1 _b_'. Page 238 'adjoining the _Perichaenacae_' as in original. This is probably 'Perichaenaceae', as elsewhere in this book, however, it is in a quotation so is unchanged. Page 241 2. 'Ophiotheca chrysoperma _Currey_.' changed 'chrysoperma' to 'chrysosperma'. Page 262 'often, to circumscissle' changed 'circumscissle' to 'circumscissile'. Page 262 'to be uniformily distinctly warted' changed 'uniformily' to 'uniformly'. Page 263 'evanescent peridium suggests _Arycria_' changed '_Arycria_' to '_Arcyria_'. Page 265 'In typical spcimens' changed 'spcimens' to 'specimens'. Page 269 3. Trichia iowenis _Macbr._ Changed 'iowenis' to 'iowensis'. Page 289 '[Greek: klaotos]' changed to '[Greek: klastos]. Page 289 '[Greek: echiuos]' changed to '[Greek: echinos]'. Page 290 '[Greek: lanchos]' changed to '[Greek: lachnos]'. Page 290 LEPIDODERMA, 144 [Greek: lepis], a scale, and [Greek: 'depma'], a covering. Gr. changed 'depma' to 'derma'. Page 290 '[Greek: gala], a, milk. Gr.' changed to '[Greek: gala], milk. Gr.'. Removed 'a,'. Page 290 '[Greek: ophix]' unchanged. Maybe '[Greek: tricha]' would be more appropriate. Page 292 'Diachafa 185' changed to 'Diachaea 185' to match the referenced page. Page 297 'pulchripes _Peck_, 69.' changed to 'pulcherripes _Peck_, 69.' to match the referenced page. Page 304 _Badhamia macrocarpa_ Rost., p. 7. 'changed p. 7.' to 'p. 37.' Page 324 _Comatricha subcaespitosa_ Peck, p. 282. changed 'p. 282' to 'p. 185'. Page 324 _Comatricha gracilis_ Wingate, p. 184. changed 'p. 184.' to 'p. 183'. Page 328 _Badhamia orbiculata_ Rex., p. 66. changed 'p. 66.' to 'p. 37.' Page 338 'showing transional phases' changed 'transional to 'transitional'. Various pages Inconsistent hyphenation: flavo-fusca flavofusca flavo-fuscum flavofuscum net-work network wide-spread widespread