. Handbook of the trees of the northern states and Canada east of the Rocky Mountains, photo-descriptive . Trees. Handbook of Trees of the ISToethekn States and Canada. 193 The Hackberry in the forests of the rich bottom-hinds of ine Ohio River basin some- times exceeds 100 ft in height and its trunk is sometimes 4 or 5 feet in diameter, but when in dryer soil of regions more unfavorable to its growth it is a much smaller tree. When isolated it develops an ovoid or oblong top of many small branches and fine branchlets. It is abundant in the Mississippi basin, but in the northeastern states and
. Handbook of the trees of the northern states and Canada east of the Rocky Mountains, photo-descriptive . Trees. Handbook of Trees of the ISToethekn States and Canada. 193 The Hackberry in the forests of the rich bottom-hinds of ine Ohio River basin some- times exceeds 100 ft in height and its trunk is sometimes 4 or 5 feet in diameter, but when in dryer soil of regions more unfavorable to its growth it is a much smaller tree. When isolated it develops an ovoid or oblong top of many small branches and fine branchlets. It is abundant in the Mississippi basin, but in the northeastern states and Canada so uncom- mon or local in its distribution as not to be generally known by the country people when it is observed, and strange names are often given to it. Two large trees having considera- ble local celebrity as "Unknown Trees" (one near Palatine Bridge and the other near Sehuy- lerville, N. Y.) I have found upon examina- tion to be of this species, ana my father has told me of having had several similar ex- periences. The leaves of the trees of this species in the Black River valley of northern New York commonly show an interesting variegation in mid-summer and becoming more marked as the season advances. This I am informed by Dr. B. T. Galloway is due to a parasitic fungus, known as the Phyllosticta Celtidis E. & K. The wood is rather heavy, a cubic foot when absolutely dry weighing lbs. and is used in the manufacture of furniture and agricul- tural implements, for fuel, fences, Lrnrps inequilateral, ovate, more or less falcate, rounded or cordate or tapering and oblique at base, coarsely serrate, tbin, prominently reticulate, Ii?ht green and smootli or roughisb above, paler and glabrous ar nearly so beneath. Flowers as described for the genus. Fruit subglobose or ob- long, about M- in. long, with thielc dark purple skin, yellowish flesh and smooth pit.'' Var. pumila Gray, is a shrubby form of the Southern states, through Missouri and westwa
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