Part 6

Bark below base of lateral branches darkened-triangular in outline; leaves long acuminate and lustrous above; staminate catkins usually solitary. 2 B. populifolia.

Bark below base of lateral branches not darkened; leaves ovate and not lustrous above; staminate catkins usually 2-3. 3 B. papyrifera.

Bark of trunks dark; fruiting aments erect or nearly so. 4 B. nigra.

=1.= =Betula lùtea= Michaux filius. Birch. Yellow Birch. Plate 32. Medium size trees; bark of small trees and of the branches of old trees smooth, silver or dark gray, freely peeling off in thin strips, becoming on older trees a dark brown, rarely tight, usually fissured into wide plates and rolling back from one edge; the shoots of the year hairy, greenish gray, becoming glabrous or nearly so and reddish-brown by the end of the second year, not aromatic when bruised but when chewed sometimes a faint wintergreen odor can be detected; winter buds pointed, reddish-brown, the lower scales more or less pubescent, generally with a fringe of hairs on the margins; leaves usually appearing in pairs, ovate to ovate-oblong, 4-14 cm. long, taper-pointed, oblique and wedge-shape, rounded or slightly cordate at the base, sharply and rather coarsely serrate, hairy on both sides when they appear, becoming at maturity glabrous or nearly so above, and remaining more or less pubescent below, especially on the veins, both surfaces with few to numerous resinous dots; petioles permanently hairy, generally 5-13 mm. long; flowers appear in May; staminate spikes in clusters at the ends of the branches, about 6 cm. long, scales broadly ovate, blunt, fringed with hairs, green-tipped with a margin of reddish-brown; pistillate spikes solitary in the axils of the leaves, mature spikes 2.5-5 cm. long, generally 2.5-3 cm. long, commonly about half as thick as long, recurved to ascending, commonly about horizontal, sessile or on short stalks; scales very variable, 5-11 mm. long, generally 7-8 mm. long, sometimes as wide as long but generally about one-fourth longer than wide, densely pubescent on the back, or rarely glabrous on the back, ciliate, glabrous or nearly so on the inside, commonly with a few brown or black glands on the margin, commonly lobed to more than one-third of their length, lobes ascending or divaricate, the lateral generally the larger and almost as long as the narrower middle lobe; nuts divested of the wings, slightly obovate, about 3 mm. long, wings about two-thirds as wide as the nut and usually with a fringe of hairs at the blunt apex.

=Distribution.=--The distribution of this species is variously given as from Newfoundland west to Manitoba and south in the Alleghenies to Georgia. It is now definitely known that the species of _Betula_ hybridize which may account for the peculiar forms often encountered. That there are geographic races or Mendelian segregates of this species is evidenced by the different interpretations given this species by different authors. _Betula alleghanensis_ Britton appears to be one of them. The descriptive difference between _Betula lenta_ and _Betula lutea_ is not clear, which has resulted in many authors crediting _Betula lenta_ to Indiana and the area west of Indiana.

The preceding description does not agree with that of _Betula lutea_ exactly, and has been drawn to cover the specimens at hand from Indiana which the author has from Allen, Crawford, Lagrange, Lake, Marshall, Porter and Steuben Counties. It has recently been reported from White County by Heimlich.[29] He says: "Specimens were taken from two trees about two miles south of Buffalo near the water's edge of the river." The writer has visited this locality and found here, and also on the island above the bridge a little farther down the river, _Betula nigra_, but could not find _Betula lutea_. Since Heimlich did not report _Betula nigra_, which unmistakably occurs here, I assume he has confused the two species. It is very local in its distribution, and appears to be confined to swamps, borders of lakes, and streams in the extreme northern part of the State. It has not been seen south of the northern end of the State, except a few small trees found clinging to the walls of the cliffs of a ravine about one mile east of Taswell in Crawford County. The walls of this ravine are about 25 meters high; associated with it were a few trees of hemlock, and on the top of the cliffs, laurel (_Kalmia latifolia_).

Large trees of this species in Indiana are usually from 4-6 dm. in diameter and about 15 m. high. The number in any one station is usually few, although there were formerly patches where it was plentiful. Van Gorder[30] reports for Noble County _Betula lenta_ which should be transferred to this species, and he says: "There is a marsh of several acres of birch in Section 15 of York Township." The largest area now known is that contained in the large tamarack swamp near Mineral Springs in Porter County. In this swamp are found tamarack and white cedar. It was in this swamp that the writer found a peculiar form of birch which has been determined as _Betula Sandbergi_. Since this species[31] is recognized as a hybrid of _Betula papyrifera_ and _Betula pumila_ variety _glandulifera_, and the last parent of this hybrid is not found in the vicinity, a discussion of this form is not presented. In the immediate vicinity are found only _Betula lutea_ and _Betula pumila_. _Betula papyrifera_ is found about a mile distant to the south. It is assumed that this form is a cross between _Betula lutea_ and _Betula pumila_.

=2.= =Betula populifòlia= Marshall. Gray or White Birch. Plate 33. A small tree; bark a chalky-white, not separating into thin layers, inner bark orange, on the trunks of old trees nearly black; shoots at first covered with numerous glands, becoming smooth and yellowish or reddish-brown; leaves generally long-deltoid, average blades 3-6 cm. long, usually long taper-pointed, truncate or nearly so at the base, irregularly double-serrate, slightly pubescent on the veins when young, soon becoming glabrous; fertile catkins 1.5-3 cm. long and about 7 mm. in diameter; bracts of eastern trees differ from those of Indiana trees which are about 3-4 mm. long, lobed to about 1/3 of the distance from the apex, lateral lobes the largest and strongly divaricate, puberulent on the back; seed strongly notched at the apex; nut slightly obovoid; wings much broader than the nut.

=Distribution.=--Nova Scotia west to southern Ontario and south to Delaware and Pennsylvania. In Indiana it has been reported from Lake, Laporte, Porter, St. Joseph and Tippecanoe Counties. There may be some doubt about the Tippecanoe record, since many of the older records were made from cultivated trees. The numbers of the species in Indiana were always limited. It is not able to meet changed conditions and it has already almost disappeared from our area. I was told that formerly this species was found all about a lake in Laporte County, but it has all died out. Its appearance in Indiana is peculiar since it is not found west of us, or north in Michigan or east in Ohio. This small group of trees near Lake Michigan is three or four hundred miles from the nearest of their kind.

=Remarks.=--This species is called white and gray birch. The largest tree seen in Indiana was about 2 dm. in diameter and 13 m. high.

=3.= =Betula papyrífera= Marshall. Paper or Canoe Birch. Plate 34. Rather a small tree; bark thin, creamy white; chalky, dark near the base on old trees, separating in thin papery layers; shoots green, glandular and hairy, becoming glabrous and reddish-brown; leaves ovate or rhombic-ovate, acute to long taper-pointed, truncate, rounded or wedge-shape at the base, average blades 5-8 cm. long, usually irregularly double-serrate, hairy at first, becoming glabrous above or nearly so, remaining more or less pubescent below, especially on the veins and with tufts of hairs in the axils of the veins, minutely glandular on both surfaces, sometimes with only a few glands on the midribs above; fertile catkins 2-4 cm. long and about 6-9 mm. wide, bracts about 4 mm. long, pubescent on both faces, lobed to about one-third the distance from the apex, the lateral lobes the largest, divaricate or slightly recurved; seed deeply notched at apex, nut oval, pubescent at the apex, wings as broad as, or broader than the nut.

=Distribution.=--Alaska to Labrador, south to New York, northern Indiana, Colorado and Washington. In Indiana it has been reported from Lake, Laporte, Marshall and St. Joseph Counties. It has not been found as a native in Ohio. This species is another example of a northern form finding its southern limit near Lake Michigan.

=Remarks.=--This species in other parts of the country is known as white, paper and canoe birch. I have not seen specimens more than 2 dm. in diameter in Indiana.

=4.= =Betula nìgra= Linnæus. Black or Red Birch. Plate 35. A medium sized tree; bark on young trees peeling off transversely in thin reddish-brown strips which roll back and usually persist for several years, bark of older trees dark brown, furrowed and separating into short plates or peeling off in strips; young twigs hairy, becoming glabrous and reddish at the end of the season; leaves rhombic-ovate, acute, short and broadly wedge-shaped at the base, blades of ordinary leaves 4-8 cm. long, irregularly toothed, glabrous above and pubescent beneath, rarely entirely glabrous; fertile catkins generally 2-3 cm. long, and usually slightly less than 1 cm. wide; bracts 6-10 mm. long, pubescent, ciliate, lobed to near the middle, the lobes about equal; nuts broadly ovate, broader than its wings, pubescent at the apex; wood light, strong, close-grained, heart wood light brown.

=Distribution.=--Massachusetts west to Minnesota and south to Florida and Texas. In Indiana it is found more or less frequent in the counties bordering the Kankakee River, and as far east as St. Joseph, Marshall and Miami Counties. Along the Kankakee River it is frequently a tree of 6-8 dm. in diameter. This species has not been found in Michigan, northeastern Indiana or northern Ohio. It has never been noted near Lake Michigan, and the nearest point is Cedar Lake in Lake County about 20 miles south of the Lake. It is more or less frequent along certain streams throughout the southwestern part of the State. It is found as far north as Putnam and Marion Counties and eastward as far as Bartholomew, Scott and Clark Counties. There are no records for this species for eastern Indiana or western Ohio. About Hovey Lake in Posey County it reaches its greatest size, where trees up to 8 dm. in diameter and 30 m. high are to be found. In the "flats" in certain parts of Jackson and Scott Counties it becomes a common tree, associated with pin oak and sweet gum.

=Remarks.=--This is the most abundant birch of Indiana. In fact all other species are too rare to be of economic importance. The fact that other species of birch are so rare in Indiana, is the reason that this species is simply called "Birch." Outside of Indiana it is known as red birch and river birch. The principal use of this wood in this State is for heading.

All of the birches, especially the horticultural forms, are used more or less for ornamental planting. They are beautiful trees but are short lived.

=4. ÁLNUS.= The Alders.

Trees or shrubs; bark astringent; staminate and pistillate catkins begin to develop early in summer and flower the following year early in the spring before the leaves appear; bracts of the fertile catkins thick and woody, obdeltoid with 3-rounded lobes at the apex; nuts obovate, reddish-brown.

Leaves sharply double-serrate, the ends of the primary veins forming the apex of the larger teeth, glaucous beneath; nuts with a narrow thick margin 1 A. incana.

Leaves single-serrate, pale beneath; nuts without margins 2 A. rugosa.

=1.= =Alnus incàna= (Linnæus) Muenchhausen. Speckled Alder. Plate 36. Shrubs or small trees; bark generally smooth and a reddish-brown with a tinge of gray, with grayish dots, hence its name; twigs hairy at first, becoming smooth by the end of the season and a golden or reddish-brown with many fine dark specks; leaves broadly-oval, acute or short-pointed at apex, usually broadly rounded at the base, average blades 6.5-11 cm. long, glaucous beneath, hairy on both sides on unfolding, at maturity becoming glabrous above or with a few hairs on the veins, beneath remaining more or less hairy until late in autumn when usually only the veins are hairy; pistillate catkins resembling small cones, 1-1.5 cm. long and usually 7-12 mm. wide, near the ends of the branches, usually in clusters of 2-7.

=Distribution.=--Newfoundland to the Saskatchewan, south to New York, northeastern Ohio, northern Indiana and Nebraska. In Indiana it is confined to the northern tier of counties. I have specimens from Elkhart, Lagrange, Lake and Porter Counties. It was reported from Carroll County by Thompson, but in the absence of a verifying specimen I am inclined to think this citation should be referred to _Alnus_ _rugosa_. This species grows in low ground on the borders of streams, borders of swamps and in almost extinct sloughs near Lake Michigan. It is also found along Pigeon River in the eastern part of Lagrange County. In the vicinity of Mineral Springs in Porter County it is locally a common shrub or tree. It has the habit of stooling out, and commonly the several specimens will be deflected from a vertical from 20-45 degrees. The largest specimens are from 1-1.4 dm. in diameter and about 10 m. high.

=Remarks.=--This species could be used to good advantage in ornamental planting in low ground. It grows rapidly, is easily transplanted and its foliage is dense and attractive.

=2.= =Alnus rugòsa= (Du Roi) Sprengel. Smooth Alder. Plate 37. Shrubs with fluted or angled trunks, resembling _Carpinus_; bark thin, smooth or nearly so, reddish-brown, weathering gray; twigs hairy at first, becoming gray or reddish-brown by the end of the season and more or less glabrous and covered with small dark specks; leaves obovate, barely acute or rounded at apex, wedge-shape at base, average blades 6-10 cm. long, hairy on both surfaces while young, becoming smooth or nearly so above, remaining more or less hairy beneath, especially on the veins, under surface of leaves sufficiently glutinous to adhere to paper if pressure be applied, margins set with short callous teeth, about .5-1 mm. long; fertile catkins cone-shape, 10-20 mm. long and about 7 mm. in diameter, borne at the ends of branches in clusters of 2-5.

=Distribution.=--Maine to Minnesota, south to Florida and Texas. In Indiana it is quite local. It has been reported in many of the counties of northern Indiana north of the Wabash River. It has been found in several of the southern counties and as far north as Salt Creek in Monroe County. No reports for the central part of the State. It is absent also in all of the eastern counties of the State, and the western part of Ohio. It is found growing in clumps in wet woods, swamps, cold bogs and along streams. It is usually a tall slender shrub; however, a specimen has been seen that measured 7 cm. in diameter and 5 m. in height.

=Remarks.=--Of no value except for ornamental planting in wet ground.

=FAGÀCEAE.= The Beech Family.

Trees with simple, alternate, petioled leaves; flowers of two kinds; fruit a one-seeded nut. This is the most important family of trees occurring in the State.

Winter buds long and slender, at least 4 times as long as wide; staminate flowers in globose heads on drooping peduncles; nuts sharply 3-angled 1 Fagus.

Winter buds not long and slender and less than 4 times as long as wide; staminate flowers in slender catkins; nuts not as above.

Staminate catkins erect or spreading; nut flattened on one side and enclosed in a spiny, woody husk 2 Castanea.

Staminate catkins drooping; nuts not flattened on one side, seated in a scaly, woody cup 3 Quercus.

=1. FÀGUS.= The Beech.

=Fagus grandifòlia= Ehrhart. Beech. Plate 38. Large tall trees with bark from light to dark gray; twigs densely covered at first with long hairs, soon becoming glabrous and turning to a reddish-brown; terminal winter buds about 2 cm. long; leaves ovate to ovate-oblong, long taper-pointed to merely acute, wedge-shape to cordate at base, regularly and usually minutely serrate, average blades 7-12 cm. long, silky when young, becoming at maturity glabrous above and nearly so beneath except on the veins; flowers appear in May; fruit a bur, supported on a club-shaped pubescent peduncle about 1.5 cm. long, covered with short recurved prickles, densely rufous-pubescent, its 4-valves enclosing the two triangular brown nuts; nuts edible; wood very hard, strong, usually tough, difficult to season, close-grained, takes a high polish, sap wood white, heart wood reddish.

=Distribution.=--Nova Scotia, southern Ontario to Wisconsin, south to the Gulf States and Texas. It is found in every county of the State, although it is local in the prairie and dry sandy regions of the northwestern part of the State. It is a frequent to a very common tree on the high ground in many parts of the State. If the high ground and hills of the State are not forested with white and black oak, beech is almost certain to be the prevailing species. Wherever beech is found it is usually a frequent to a common tree, and it is not uncommon to see areas which are almost a pure stand of this species. It is also a frequent to a common tree in southern Indiana in what is called the "flats." Here it is associated with sweet gum and pin oak. On the slopes of hills of the southern counties it is associated with a great variety of trees. In the central part of the State its most frequent associate is the sugar maple. In the northern counties it has a wider range of associates, including white oak, ash, slippery elm, buckeye, ironwood, etc. It should be added that tulip is a constant associate except in the "flats." In point of number it ranks as first of Indiana trees.

=Remarks.=--Specimens with the habit of retaining their branches which lop downward, usually have thicker sap wood and are harder to split. This form is popularly styled the white beech. The form with smooth tall trunks with upright branches usually has more heart wood, splits more easily and is popularly distinguished as red beech. The term yellow beech is variously applied. This species is a large tree in all parts of the State, although the largest specimens are found in the southeastern part of the State. In the virgin forests trees almost 1 m. in diameter and 30 m. high were frequent.

Beech was formerly used only for fuel, but in the last few decades it has been cut and used for many purposes, and the supply is fast diminishing. The beauty of this tree both in summer and winter, sunshine or storm makes it one of the most desirable for shade tree planting, but I have failed to find where it has been successfully used. It is one of the few trees that does not take to domestication. When the original forest is reduced to a remnant of beech, as a rule, the remaining beech will soon begin to die at the top. It is difficult to transplant. When planted the hole should be filled with earth obtained from under a living tree, in order to introduce the mycorrhiza that is necessary to the growth of the tree.

=2. CASTÀNEA.= The Chestnut.

=Castanea dentàta= (Marshall) Borkhausen. Chestnut. Plate 39. Large trees with deeply fissured bark, smooth on young trees; young twigs more or less hairy, soon becoming glabrous and a reddish-brown; leaves lanceolate, average blades 13-22 cm. long, taper-pointed, wedge-shape or obtuse at the base, coarsely serrate, teeth usually incurved, at maturity glabrous on both sides; flowers appear after the leaves in the latter part of June or early in July, the staminate catkins from the axils of the leaves of the year's growth, 1.5-3 dm. long, pistillate flowers in heads on short stalks in the axils of the leaves, usually on the branch beyond the greater part of the staminate catkins; fruit a globular spiny bur 5-7 cm. in diameter which contains the nuts; nuts usually 1-3, rarely 5, flattened on one side, edible; wood light, soft, not strong, checks and warps on seasoning, yellowish-brown, durable in contact with the ground.

=Distribution.=--Maine, southern Ontario, Michigan, south to Delaware and in the mountains to Alabama, and west to Arkansas. In Indiana it is found locally in the south central counties. The most northern station where I have seen trees that are native to a certainty is in Morgan County a short distance north of Martinsville. There are a few trees on the south bank of White River in Mound Park about 2 miles east of Anderson. This site was formerly an Indian village, and the trees may have been introduced here. The late A. C. Benedict formerly of the State Geological Survey, told me he saw a colony in 1878 in Fayette County on the farm of Dr. B. Ball, about 3 miles west of Connersville on the east side of Little Williams Creek. The trees were at least 6 dm. in diameter. The western line of distribution would be a line drawn from Martinsville to a point a few miles west of Shoals and south to Tell City.

=Remarks.=--The greatest numbers of this species are found on the outcrops of the knobstone in Clark, Floyd, Harrison, Jackson, Lawrence, Martin, Orange and Washington Counties. It grows on high ground, associated with white and black oak, beech, etc. The species in all of our area grows to be a large tree. In the Ind. Geol. Rept. 1874:70:1875 there is a reference to a "stump in Jackson County that was 9 ft. and 2 in. in diameter." This species is rather gregarious in habit, and rarely are isolated trees found. It is quite local in its distribution, but where found it is usually a common tree. The bark was much used in tanning, and the timber for poles, ties and posts. The demand for this species has led to heavy cutting, so that the present supply is practically limited to inferior or small trees. The nut crop in this State is usually badly infested by the weevil.