Part 119

L Laguncularia, 767. Laguncularia racemosa, 767. Larch, 31. Large-leaved Cucumber-tree, 348. Larix, 31. _Larix alaskensis_, 32. _Larix americana_, 31. Larix decidua, 31. Larix Kæmpferi, 31. Larix laricina, 31. Larix Lyallii, 33. Larix occidentalis, 32. Lauraceæ, 356. Laurel, 794. Laurel, California, 361. Laurel, Great, 792. Laurel, Mountain, 794. Laurel Oak, 264, 266. Lawson Cypress, 77. Leaf, Sweet, 831. Leather Wood, 666. Leguminosæ, 585. Leitneria floridana, 167. Leitneriaceæ, 167. Leucæna, 596. Leucæna glauca, 596. Leucæna Greggii, 597. Leucæna pulverulenta, 598. Leucæna retusa, 598. Libocedrus, 65. Libocedrus decurrens, 65. Lignum-vitæ, 630. Lilac, 728. Lilac, California, 727. Liliaceæ, 110. Lime, Ogeechee, 782. Lime, Wild, 634. Linden, 732, 733. Liquidambar, 367. Liquidambar orientalis, 367. Liquidambar Styraciflua, 367. Liriodendron, 351. Liriodendron chinensis, 352. Liriodendron Tulipifera, 352. Lithocarpus, 236. Lithocarpus densiflora, 236. Lithocarpus densiflora f. lanceolata, 236. Lithocarpus densiflora var. montana, 237. Live Oak, 269, 270, 272, 276. Loblolly Bay, 751. Loblolly Pine, 16. Locust, 609, 622, 623, 624. Locust, Clammy, 625. Locust, Honey, 600, 608. Locust, Water, 610. Locust, Yellow, 623. Lodge Pole Pine, 23. Log Wood, 719. Lombardy Poplar, 120. Long-leaved Cucumber-tree, 349. Long-leaved Pine, 14. Lyonia, 797. Lyonia ferruginea, 798. Lyonothamnus, 378. Lyonothamnus floribundus, 378. Lysiloma, 589. Lysiloma bahamensis, 590.

M Maclura, 331. Maclura pomifera, 332. Madroña, 799, 800, 801. Magnolia, 342, 345. Magnolia acuminata, 343. _Magnolia acuminata_ var. _cordata_, 344. _Magnolia acuminata_ var. _ludoviciana_, 344. Magnolia cordata, 344. _Magnolia fœtida_, 345. Magnolia Fraseri, 349. _Magnolia glauca_, 346. Magnolia grandiflora, 345. Magnolia grandiflora var. exoniensis, 346. Magnolia macrophylla, 348. Magnolia major, 347. Magnolia, Mountain, 349. Magnolia pyramidata, 350. _Magnolia Thompsoniana_, 347. Magnolia tripetala, 347. Magnolia virginiana, 346. Magnolia virginiana var. australis, 347. Magnoliaceæ, 342. Mahogany, 606, 648, 664. Mahogany, Mountain, 550. Malpigiaceæ, 631. Malus, 379. Malus angustifolia, 385. Malus angustifolia var. pendula, 386. Malus bracteata, 386. Malus coronaria, 382. Malus coronaria var. dasycalyx, 382. Malus coronaria var. elongata, 383. Malus Dawsoniana, 389. _Malus elongata_, 383. Malus fusca, 389. Malus glabrata, 380. Malus glaucescens, 381. Malus ioensis, 387. Malus ioensis var. Bushii, 388. Malus ioensis var. creniserrata, 388. Malus ioensis var. Palmeri, 388. Malus ioensis var. plena, 388. Malus ioensis var. spinosa, 388. Malus ioensis var. texana, 388. Malus lancifolia, 384. Malus platycarpa, 383. Malus platycarpa var. Hoopesii, 384. Malus pumila, 379. _Malus rivularis_, 389. Malus Soulardii, 388. Manchineel, 653. Mangrove, 763. Mangrove, Black, 866. Mangrove, White, 767. Maple, 681. Maple, Ash-leaved, 699. Maple, Black, 693. Maple, Broad-leaved, 687. Maple, Dwarf, 682. Maple, Mountain, 685. Maple, Red, 696. Maple, Rock, 688. Maple, Scarlet, 696. Maple, Silver, 695. Maple, Soft, 695. Maple, Striped, 686. Maple, Sugar, 688, 691, 692, 694. Maple, Vine, 684. Marlberry, 806. Marsh Pine, 18. Mastic, 809. Maul Oak, 272. May Haw, 434. Maytenus, 676. Maytenus boaria, 676. Maytenus phyllanthoides, 677. Melastomaceæ, 776. Melia Azedarach, 648. Meliaceæ, 648. _Mespilus œstivalis_, 434, 435, 436. Mesquite, 599, 600. Mesquite, Screw Pod, 603. Metopium, 658. _Metopium Metopium_, 659. Metopium toxiferum, 659. Mexican Mulberry, 330. Mimosa, 598. Mimusops, 819. Mimusops emarginata, 819. _Mimusops Sieberi_, 819. Misanteca, 364. Misanteca triandra, 364. Mock Orange, 579. _Mohrodendron carolinum_, 825. _Mohrodendron dipterum_, 828. Monocotyledons, 96. Monterey Cypress, 70. Monterey Pine, 19. Moose Wood, 686. Moraceæ, 328. Morus, 328. Morus alba, 329. _Morus celtidifolia_, 330. Morus microphylla, 330. Morus nigra, 329. Morus rubra, 329. Morus rubra var. tomentosa, 329. Mossy Cap Oak, 290. Mountain Ash, 390, 842. Mountain Ash, European, 390. Mountain Hemlock, 46. Mountain Laurel, 794. Mountain Magnolia, 343, 349. Mountain Mahogany, 550. Mountain Maple, 685. Mountain White Oak, 283. Mulberry, 328, 330. Mulberry, Mexican, 330. Mulberry, Paper, 328. Mulberry, Red, 329. Myrica californica, 166. Myrica cerifera, 164. Myrica cerifera var. pumila, 165. Myrica inodora, 165. Myrica inodora var. pumila, 165. Myrica rubra, 164. Myricaceæ, 163. Myrsinaceæ, 805. Myrtaceæ, 768. Myrtle, 768. Myrtle, Blue, 727. Myrtle, Sea, 804. Myrtle, Wax, 164, 165, 166.

N Naked Wood, 729, 774. Nannyberry, 888. Narrow-leaved Cottonwood, 127. Nogal, 172. Norway Pine, 22. Norway Spruce, 35. Nut, Galloway, 181. Nut, King, 186. Nut Pine, 8, 9, 10. Nutmeg, California, 92. Nutmeg Hickory, 182. Nyctaginaceæ, 340. Nyssa, 779. Nyssa aquatica, 783. Nyssa biflora, 781. Nyssa ogeche, 782. Nyssa sylvatica, 780. Nyssaceæ, 779.

O Oak, 237. Oak, Basket, 304. Oak, Bear, 254. Oak, Black, 246, 250, 251, 274. Oak, Black Jack, 258. Oak, Blue, 283. Oak, Blue Jack, 265. Oak, Burr, 290. Oak, Chestnut, 236, 305, 306. Oak, Cow, 304. Oak, Evergreen, 282. Oak, Jack, 258. Oak, Laurel, 264, 266. Oak, Live, 269, 270, 272, 276. Oak, Maul, 272. Oak, Mossy Cap, 290. Oak, Mountain White, 283. Oak, Overcup, 292. Oak, Pin, 248. Oak, Post, 293. Oak, Red, 241, 242, 255. Oak, Rock Chestnut, 305. Oak, Scarlet, 247. Oak, Scrub, 254, 275. Oak, Shin, 285. Oak, Shingle, 266. Oak, Spanish, 247, 255. Oak, Swamp Spanish, 248, 256. Oak, Swamp White, 292, 303. Oak, Tan Bark, 236. Oak, Turkey, 253. Oak, Upland Willow, 265. Oak, Valley, 298. Oak, Vine, 297. Oak, Water, 260, 264. Oak, White, 280, 281, 296, 298, 300. Oak, Willow, 262. Oak, Yellow, 306. Oak, Yellow-bark, 250. Oaks, Black, 238. Oaks, Chestnut, 241. Oaks, White, 240. Oaks, Willow, 239. Ocotea, 359. Ocotea Catesbyana, 359. Ogeechee Lime, 782. Ohio Buckeye, 703. Olacaceæ, 336. Old Field Pine, 16. Old Man’s Beard, 855. Olea europæa, 832. Oleaceæ, 832. Olive-tree, Black, 765. Olneya, 626. Olneya tesota, 626. Opuntia, 759. Opuntia fulgida, 760. Opuntia spinosior, 761. Opuntia versicolor, 762. Orange, Bitter-sweet, 633. Orange, Mock, 579. Orange, Osage, 332. Orange, Wild, 579. _Oreodoxa regia_, 108. Osage Orange, 332. Osmanthus, 856. Osmanthus americanus, 857. Osmanthus fragrans, 857. Ostrya, 202. Ostrya Knowltonii, 204. Ostrya virginiana, 203. Ostrya virginiana var. glandulosa, 203. Overcup Oak, 292. Oxycedrus, 79. Oxydendrum, 796. Oxydendrum arboreum, 796.

P _Padus valida_, 575. Padus virens, 578. Palaquiuum gutta, 809. Palm, Desert, 104. Palm, Fan, 104. Palm, Royal, 107, 108. Palmæ, 96. Palmetto, 101, 103. Palmetto, Cabbage, 102. Palmetto, Silvertop, 99. Palo Blanco, 322. Palo Verde, 615. Paper Birch, 212. Paper Mulberry, 328. Paradise-tree, 642. Parkinsonia, 611. Parkinsonia aculeata, 611. Parkinsonia microphylla, 612. Parsley Haw, 530. _Pasania_, 236. _Pasania densiflora_, 236. Pawpaw, 353, 756. Peach Willow, 144. Pear, Alligator, 357. Pecan, 177. Pecan, Bitter, 179. Pepperidge, 780. Persea, 356. Persea americana, 357. Persea Borbonia, 357. Persea palustris, 358. _Persea pubescens_, 358. Persimmon, 821. Persimmon, Black, 823. Picea, 34. Picea Abies, 35. Picea Breweriana, 40. _Picea canadensis_, 37. Picea Engelmannii, 38. Picea glauca, 37. Picea glauca var. albertiana, 38. Picea mariana, 35. Picea mariana var. brevifolia, 36. Picea orientalis, 35. _Picea Parryana_, 39. Picea pungens, 39. _Picea rubens_, 36. Picea rubra, 36. Picea sitchensis, 41. Picramnia, 643. Picramnia pentandra, 643. Pigeon Plum, 340. Pignut, 180, 191, 192, 194. Pinaceæ, 1. Pinckneya, 875. Pinckneya pubens, 876. Pine, 2. Pine, Austrian, 2. Pine, Bull, 12, 20. Pine, Cedar, 25. Pine, Digger, 20. Pine, Foxtail, 7, 8. Pine, Gray, 24. Pine, Hickory, 8, 29. Pine, Jack, 24. Pine, Jersey, 26. Pine, Knob-cone, 19. Pine, Loblolly, 16. Pine, Lodge Pole, 23. Pine, Long-leaved, 14. Pine, Marsh, 18. Pine, Monterey, 19. Pine, Norway, 22. Pine, Nut, 8, 9, 10. Pine, Old Field, 16. Pine, Pitch, 17, 21. Pines, Pitch, 11, 21. Pine, Pond, 18. Pine, Prickle-cone, 28. Pine, Red, 22. Pine, Rocky Mountain White, 6. Pine, Sand, 27. Pine, Scotch, 2. Pine, Scrub, 23, 26. Pine, Short-leaved, 26. Pine, Slash, 15. Pines, Soft, 3. Pine, Southern, 14. Pine, Spruce, 25, 27. Pine, Sugar, 5. Pine, Swamp, 15. Pine, Swiss Stone, 2. Pine, Table Mountain, 29. Pine, Torrey, 30. Pine, White, 3, 4, 6. Pine, Yellow, 12, 14, 26. Pin Oak, 248. Piñon, 8, 9, 10. Pinus, 2. Pinus albicaulis, 6. Pinus aristata, 8. _Pinus arizonica_, 14. Pinus attenuata, 19. Pinus Balfouriana, 7. Pinus Banksiana, 24. Pinus caribæa, 15. Pinus cembra, 2. Pinus cembroides, 8. Pinus cembroides var. edulis, 9. Pinus cembroides var. monophylla, 10. Pinus cembroides var. Parryana, 9. _Pinus chihuahuana_, 12. Pinus clausa, 27. Pinus contorta, 23. Pinus contorta var. latifolia, 23. _Pinus contorta_ var. _Murrayana_, 23. Pinus Coulteri, 21. _Pinus divaricata_, 24. Pinus echinata, 26. _Pinus edulis_, 9. Pinus flexilis, 6. Pinus glabra, 25. _Pinus heterophylla_, 15. Pinus Lambertiana, 5. Pinus leiophylla, 12. _Pinus monophylla_, 10. Pinus monticola, 4. Pinus muricata, 28. Pinus nigra, 2. Pinus palustris, 14. Pinus Pinaster, 2. Pinus ponderosa, 12. Pinus ponderosa var. arizonica, 14. Pinus ponderosa var. Jeffreyi, 13. Pinus ponderosa var. scopulorum, 13. Pinus pungens, 29. _Pinus quadrifolia_, 9. Pinus radiata, 19. Pinus resinosa, 22. Pinus rigida, 17. Pinus rigida var. serotina, 18. Pinus Sabiniana, 20. _Pinus serotina_, 18. Pinus silvestris, 2. _Pinus strobiformis_, 6. Pinus Strobus, 3. Pinus tæda, 16. Pinus Torreyana, 30. Pinus virginiana, 26. Piscidia, 629. _Pisonia longifolia_, 341. Pistacia, 656. Pistacia texana, 656. Pistacia vera, 656. Pistacio-nuts, 656. Pitch Pine, 17, 21. Pitch Pines, 11. Pithecolobium, 586. Pithecolobium brevifolium, 587. Pithecolobium flexicaule, 588. Pithecolobium unguis-cati, 586. Planera, 316. Planera aquatica, 317. Plane-tree, 371. Platanaceæ, 371. Platanus, 371. Platanus acerifolia, 372. _Platanus glabrata_, 373. Platanus occidentalis, 372. Platanus occidentalis var. attenuata, 372. Platanus occidentalis var. glabrata, 373. Platanus orientalis, 372. Platanus racemosa, 374. Platanus Wrightii, 375. Plum, 555. Plum, Big Tree, 565. Plum, Canada, 560. Plum, Chickasaw, 569. Plum, Cocoa, 583. Plum, Darling, 720. Plum, Downward, 816. Plum, Guiana, 651. Plum, Pigeon, 340. Plum, Red, 560. Plum, Wild, 557, 561, 567. Plum, Wild Goose, 569. Poison Dogwood, 663. Poison Sumach, 663. Poison Wood, 659. Polygonaceæ, 338. Pomette Bleue, 533. Pond Apple, 355. Pond Pine, 18. Poplar, 119, 123. Poplar, Carolina, 137. Poplar, Lombardy, 120. Poplar, White, 120. Poplar, Yellow, 352. Populus, 119. Populus acuminata, 128. Populus acuminata var. Rehderi, 129. Populus alba, 120. Populus Andrewsii, 129. _Populus angulata_, 135. Populus angustifolia, 127. Populus arizonica, 131. Populus arizonica var. Jonesii, 132. _Populus balsamifera_, 125. Populus balsamifera, 135. Populus balsamifera var. virginiana, 136. Populus balsamifera var. virginiana f. pilosa, 137. Populus canadensis, 137. Populus canadensis var. Eugenie, 137. Populus candicans, 126. _Populus deltoidea_, 136. _Populus deltoides_ var. _occidentalis_, 134. _Populus fortissima_, 127. Populus Fremontii, 129. Populus Fremontii var. macrodisca, 131. Populus Fremontii var. pubescens, 131. Populus Fremontii var. Thornberii, 131. Populus Fremontii var. Toumeyi, 131. Populus grandidentata, 123. Populus grandidentata var. meridionalis, 124. Populus heterophylla, 124. Populus Jackii, 137. Populus McDougallii, 133. _Populus mexicana_, 131. _Populus nigra_, 120. _Populus nigra β virginiana_, 136. Populus Palmeri, 137. Populus Parryi, 131. Populus Sargentii, 134. Populus tacamahacca, 125. Populus tacamahacca var. Michauxii, 126. Populus texana, 132. Populus tremuloides, 121. Populus tremuloides var. aurea, 121. Populus tremuloides var. vancouveriana, 122. Populus trichocarpa, 126. Populus trichocarpa var. hastata, 127. _Populus vancouveriana_, 122. Populus Wislizenii, 133. Port Orford Cedar, 77. Post Oak, 293. Prickle-cone Pine, 28. Prickly Ash, 635. Pride of India, 648. Prince Wood, 877. Privet, Swamp, 853. Prosopis, 599. Prosopis juliflora, 600. Prosopis juliflora var. glandulosa, 601. Prosopis juliflora var. velutina, 601. Prosopis pubescens, 602. Prunus, 555. Prunus alabamensis, 576. Prunus alleghaniensis, 566. Prunus alleghaniensis var. Davisii, 567. Prunus americana, 561. Prunus americana var. floridana, 563. _Prunus americana lanata_, 563. Prunus angustifolia, 569. Prunus angustifolia var. varians, 570. _Prunus arkansana_, 565. Prunus australis, 577. Prunus caroliniana, 579. Prunus emarginata, 572. Prunus emarginata var. mollis, 572. _Prunus eximia_, 575. Prunus hortulana, 567. Prunus hortulana var. Mineri, 568. Prunus hortulana var. pubens, 568. Prunus ilicifolia, 581. Prunus integrifolia, 582. Prunus lanata, 563. Prunus Lyonii, 582. Prunus mexicana, 565. Prunus mexicana var. fultonensis, 566. Prunus mexicana var. polyandra, 566. Prunus mexicana var. reticulata, 566. _Prunus mitis_, 559. Prunus Munsoniana, 568. Prunus myrtifolia, 580. Prunus nigra, 560. _Prunus Palmeri_, 563. Prunus pennsylvanica, 571. Prunus pennsylvanica var. saximontana, 572. Prunus serotina, 575. Prunus serotina var. montana, 576. _Prunus sphærocarpa_, 580. Prunus subcordata, 557. Prunus subcordata var. oregona, 558. _Prunus tarda_, 559. Prunus tenuifolia, 564. Prunus umbellata, 558. Prunus umbellata var. injucunda, 559. Prunus umbellata var. tarda, 559. Prunus virens, 578. Prunus virginiana, 573. Prunus virginiana var. demissa, 574. Prunus virginiana var. demissa f. pachyrrachis, 575. Prunus virginiana var. leucocarpa, 573. Prunus virginiana var. melanocarpa, 574. Prunus virginiana var. melanocarpa f. xanthocarpa, 574. Pseudophœnix, 109. Pseudophœnix vinifera, 109. _Pseudosassafras_, 362. Pseudotsuga, 47. _Pseudotsuga glauca_, 49. Pseudotsuga macrocarpa, 49. _Pseudotsuga mucronata_, 48. Pseudotsuga taxifolia, 48. Ptelea, 639. Ptelea trifoliata, 639. Ptelea trifoliata var. mollis, 640. Pumpkin Ash, 844. Purple Haw, 719. _Pyrus americana_ var. _decora_, 391. _Pyrus sambucifolia_, 391. _Pyrus sitchensis_, 391.

Q Quaking Asp, 121. Quasin, 642. Quercus, 237. _Querus acuminata_, 306. Quercus agrifolia, 269. Quercus alba, 300. Quercus alba var. latiloba, 302. Quercus alba var. repanda, 302. Quercus Andrewsii, 291. Quercus annulata, 287. Quercus arizonica, 280. Quercus arkansana, 259. Quercus Ashei, 254. Quercus austrina, 300. Quercus Beadlei, 302. Quercus beaumontiana, 262. Quercus Bebbiana, 302. Quercus Benderi, 248. Quercus bicolor, 303. Quercus blufftonensis, 254. Quercus borealis, 241. Quercus borealis var. maxima, 242. _Quercus brevifolia_, 265. _Quercus breviloba_, 287, 288. Quercus Brittonii, 255. Quercus Bushii, 259. Quercus caduca, 266. _Quercus californica_, 251. Quercus carolinensis, 266. Quercus Catesbæi, 253. Quercus Chapmanii, 289. Quercus chrysolepis, 272. Quercus chrysolepis var. Palmeri, 273. Quercus cinerea, 265. Quercus cinerea β dentatolobata, 265. Quercus coccinea, 247. Quercus coccinea var. tuberculata, 247. Quercus Cocksii, 262. Quercus Comptonæ, 293. Quercus Deamii, 302. _Quercus densiflora_, 236. _Quercus digitata_, 255. Quercus Douglasii, 283. Quercus dubia, 266. Quercus dumosa, 275. Quercus dumosa var. Alvordiana, 276. Quercus Durandii, 288. Quercus ellipsoidalis, 246. Quercus Emoryi, 274. Quercus Engelmannii, 282. Quercus exacta, 268. Quercus Faxonii, 302. Quercus Fernowii, 302. Quercus Garryana, 296. _Quercus geminata_, 277. Quercus georgiana, 249. Quercus Giffordii, 255. Quercus guadalupensis, 291. Quercus Harbisonii, 295. Quercus Hastingsii, 259. Quercus heterophylla, 263. Quercus Hillii, 292. Quercus hypoleuca, 268. Quercus ilicifolia, 254. Quercus imbricaria, 266. Quercus Jackiana, 302. Quercus jolonensis, 284. Quercus Kelloggii, 251. Quercus Laceyi, 286. Quercus laurifolia, 264. Quercus laurifolia var. hybrida, 264. Quercus laurifolia var. tridentata, 264. Quercus Leana, 268. Quercus leptophylla, 299. Quercus lobata, 298. Quercus Lowellii, 243. Quercus ludoviciana, 264. Quercus lyrata, 292. Quercus MacDonaldii, 276. Quercus macrocarpa, 290. _Quercus Margaretta_, 295. Quercus marilandica, 258. Quercus Mellichampii, 254. _Quercus Michauxii_, 304. _Quercus microcarya_, 261. _Quercus minor_, 293. Quercus Mohriana, 285. Quercus montana, 305. Quercus morehus, 271. Quercus Muehlenbergii, 306. Quercus Muehlenbergii var. Brayi, 308. Quercus myrtifolia, 271. _Quercus nana_, 254. Quercus nigra, 260. Quercus nigra var. tridentifera, 260. Quercus nigra var. tridentifera f. microcarya, 261. Quercus oblongifolia, 281. Quercus oviedoensis, 266. _Quercus pagoda_, 256. _Quercus pagodæfolia_, 256. Quercus palustris, 248. Quercus Phellos, 262. _Quercus platanoides_, 303. Quercus Porteri, 243. Quercus Prinus, 304. _Quercus Prinus_, 305. Quercus Rehderi, 255. Quercus reticulata, 279. Quercus rhombica, 261. Quercus Robbinsii, 248. Quercus Robur, 238. _Quercus rubra_, 242. Quercus rubra, 255. Quercus rubra var. leucophylla, 257. Quercus rubra var. pagodæfolia, 256. Quercus rubra var. triloba, 255. Quercus Rudkinii, 259. Quercus runcinata, 243. Quercus Sargentii, 306. Quercus Saulei, 302. _Quercus Schneckii_, 245. Quercus Schuettii, 304. Quercus sessiliflora, 238. Quercus Shumardii, 243. Quercus Shumardii var. Schneckii, 244. Quercus Smallii, 250. Quercus stellata, 293. Quercus stellata var. anomala, 294. Quercus stellata var. araniosa, 294. Quercus stellata var. attenuata, 294. Quercus stellata var. Boyntonii, 295. Quercus stellata var. Margaretta, 295. Quercus stellata var. Margaretta f. stonolifera, 295. Quercus stellata var. Palmeri, 294. Quercus stellata var. paludosa, 294. Quercus stellata var. parviloba, 294. Quercus stellata var. rufescens, 295. Quercus sterilis, 259. Quercus subfalcata, 264. Quercus subfalcata var. microcarpa, 264. Quercus subintegra, 266. Quercus sublaurifolia, 266. _Quercus succulenta_, 278. Quercus texana, 245. _Quercus texana_, 243, 244. Quercus texana var. chesosensis, 246. Quercus texana var. stellapila, 246. Quercus tomentella, 273. Quercus Toumeyi, 280. Quercus tridentata, 268. _Quercus undulata var. Vaseyana_, 285. Quercus utahensis, 297. Quercus utahensis var. mollis, 297. Quercus Vaseyana, 285. Quercus velutina, 250. Quercus velutina var. missouriensis, 251. Quercus virginiana, 276. Quercus virginiana var. dentata, 277, 278. Quercus virginiana van eximea, 278. Quercus virginiana var. fusiformis, 278. Quercus virginiana var. geminata, 277. Quercus virginiana var. geminata f. grandifolia, 278. Quercus virginiana var. macrophylla, 278. Quercus virginiana var. maritima, 277, 278. Quercus virginiana var. pygmaea, 279. Quercus virginiana var. virescens, 278. Quercus Walteriana, 254. _Quercus Wilcoxii_, 273. Quercus Willdenoviana, 257. Quercus Wislizenii, 270.

R Rapanea, 807. Rapanea guianensis, 807. Red Ash, 845. Red Bay, 357. Red Birch, 208, 216. Redbud, 604. Red Cedar, 68, 88, 89, 90. Red Elm, 313, 315. Red Fir, 48, 57, 58, 59. Red Haw, 464, 493. Red Ironwood, 720. Red Maple, 696. Red Mulberry, 329. Red Oak, 241, 242, 255. Red Pine, 22. Red Plum, 560. Red Spruce, 36. Red Stopper, 774. Red Willow, 146. Red-flowered Buckeye, 707. Redwood, 61. Retama, 611. Retinosporas, 75. Reynosia, 720. Reynosia septentrionalis, 720. Rhamnaceæ, 718. Rhamnus, 722. Rhamnus caroliniana, 724. Rhamnus cathartica, 722. Rhamnus crocea, 723. Rhamnus crocea var. ilicifolia, 723. Rhamnus crocea var. insularis, 724. Rhamnus crocea var. insularis f. pilosa, 724. Rhamnus Purshiana, 725. Rhizophora, 763. Rhizophora Mangle, 764. Rhizophoraceæ, 763. Rhododendron, 792. Rhododendron maximum, 792. Rhus copallina, 662. Rhus copallina var. lanceolata, 663. _Rhus hirta_, 660. Rhus hybrida, 662. Rhus integrifolia, 664. Rhus integrifolia var. serrata, 664. Rhus typhina, 660. Rhus vernicifera, 660. Rhus vernix, 663. River Birch, 208, 218. Robinia, 622. Robinia Holdtii, 625. Robinia neo-mexicana, 624. Robinia neo-mexicana var. luxurians, 624. Robinia neo-mexicana var. luxurians f. albiflora, 625. Robinia Pseudoacacia, 623. Robinia viscosa, 625. Rock Cedar, 87. Rock Chestnut Oak, 305. Rock Elm, 311. Rock Maple, 688. Rocky Mountain White Pine, 6. Rosaceæ, 376. Rose Bay, 792. Rowan-tree, 390. Royal Palm, 107, 108. “Royal” Walnut, 172. Roystonea, 107. Roystonea regia, 108. Rubiaceæ, 875. Rum Cherry, 575. Rutaceæ, 633.