138 Trans. Acad, Sci. of St. Louis. 
Morus rubra, L. Scales two-ranked, six or seven. First 
leaf usually ovate, sometimes slightly lobed; inner ones lobed 
or entire. Vernation and arrangement of narrow stipules as 
in Celtis occidentalis. May 2d. 
Platanus occidentalis, L. Bud conical; scales two, each 
covering the bud, the outer smooth, the inner covered by a 
gummy secretion, and usually having a bud in its axil. First 
leaf well formed, its stipule covering the remainder of the 
bud. Vernation revolute. May 2d. : 
Juglans nigra, L. Scales two to four, the outer oblong and 
obtuse, the inner increasing in length and passing by a series 
of clefts and lobes into a few-divided leaf. Flower buds 
from the lower part of the previous year’s growth, usually 
two catkins superposed, each bearing two or three small scales 
at base. Leaflets conduplicate, the edges toward the rhachis 
and the sides pressed against the bud. May 4th. 
Carya amara, Nutt. Scales two, valvate, covered with yel- 
lowish resinous dots, usually elongating and developing a few 
lobes at the apex. The first leaf, and sometimes the second 
also, is imperfectly developed. Leaflets conduplicate, side 
by side as shown in the drawing. May 3d. 
Ostrya Virginica, Willd. Scales several, the first two are 
empty, the next pair are stipular with its leaf reduced to a 
mere appendage. The third pair is attached toa normal leaf. 
Vernation straight but the leaf clasping the bud. Apr. 22d. 
Quercus macrocarpa, Mx. Seales stipular as in Q. tine- 
toria. The gradation is rather gradual from large stipules 
to narrow and from small leaves to large. Vernation condu- 
plicate but the bend to one side of the midrib (Fig. 107). 
May 3d. 
Quercus Muhlenbergii, Engelm. Scales numerous, five- 
ranked, much as in @Q. tinctoria, but the change from broad 
“ seales to narrow ones at the base of the perfect leaves 1s 
more abrupt; thus the leaves appear to come from the top 
of the bud. Vernation conduplicate. May 3d. 
Quercus tinctoria, Bartram. Scales very numerous, five- 
ranked, lower short, upper increasing in length. Several at 
the base are empty, above these each pair has a minute leaf me 
the angle between and inside, thus being stipular. The inner 
