SAPINDACES. SILVA OF NORTH AMERICA. oo 
AESCULUS GLABRA. 
Ohio Buckeye. Fetid Buckeye. 
PeTas 4, shorter than the stamens. Fruit when young covered with prickles. 
Leaves usually 5-foliolate. 
4#sculus glabra, Willdenow, Hnwm. 405. — Pursh, F?. t. 51.— Rafinesque, Alsograph. Am. 69.— Loudon, Arb. 
Am. Sept. i. 255. — Nuttall, Gen. i. 242. — De Candolle, Brit. i. 468. 
Prodr. i. 597. — Guimpel, Otto & Hayne, Abbild. Holz. A. echinata, Muehlenberg, Cat. 38. 
28, t. 24. — Hayne, Dendr. Fl. 44. Sprengel, Syst. ii, Pavia Ohioensis, Michaux f. Hist. Arb. Am. iii. 242; N. 
166.— Don, Gen. Syst. i. 652. — Torrey & Gray, Fl. N. Am. Sylva, ii. 217, t. 92. — Poiret, Lam. Dict. Suppl. iii. 
Am. i. 251.— Dietrich, Syn. ii. 1225. — Walpers, Rep. i. 593. 
424, — Rafinesque, Alsograph. Am. 69.— Gray, Gen. Ill. Ai. Ohioensis, De Candolle, Prodr. i. 597.— Don, Gen. 
ii. 207, t. 176, 177. — Loudon, Arb. Brit. i. 467. — Chap- Syst. i. 652. — Loudon, Arb. Brit. i. 467. — Nuttall, 
man, £1. 79.— Koch, Dendr. i. 508. — Sargent, Forest Sylva, ii. T1. 
Trees N. Am. 10th Census U. S. ix. 42.— Watson & Pavia pallida, Spach, Ann. Sci. Nat. ser. 2, ii. 54; Hist. 
Coulter, Gray’s Man. ed. 6, 116. Veg. iii. 23. 
4. pallida, Willdenow, Enum. 406. — Nuttall, Gen. i. Pavia glabra, Spach, Ann. Sci. Nat. ser. 2, ii. 54; Hist. 
242. — De Candolle, Prodr. i. 597.— Guimpel, Otto & Veg. iii. 24. 
Hayne, Abdild. Holz. 29, t. 25. — Sprengel, Syst. ii. Ai. muricata, 44. ochroleuca, A&. verrucosa, A&. alba, 
166. — Don, Gen. Syst. i. 652. — Lindley, Bot. Reg. xxiv. Rafinesque, Alsograph. Am. 68, 69. 
? Al. arguta, Buckley, Proc. Phil. Acad. 1860, 443. 
A tree, rising occasionally to the height of seventy feet, usually much smaller, and rarely more than 
thirty feet tall, with a trunk which sometimes, although not often, attains a diameter of two feet, and 
slender spreading branches. The bark of the trunk is three quarters of an inch to an inch thick, ashy 
gray, densely furrowed, and broken into thick plates, the surface separating into many small roughened 
scales; that of the branches and young twigs is dark brown and scaly. The branchlets when they first 
appear are orange-brown and clothed with short fine pubescence ; before the end of the season they 
are glabrous and covered with red-brown bark marked with scattered orange-colored lenticular spots. 
The winter-buds are two thirds of an inch long and acuminate, with thin, nearly triangular scales prom- 
inently keeled on the back, minutely apiculate, and slightly ciliate along the margins. The scales are 
pale brown, and those of the outer ranks are covered, like the winter branches, with a slight glaucous 
bloom. The others are bright red on the outer surface towards the bottom, the inner pair strap-shaped, 
and becoming an inch and a half or two inches long when fully developed ; they are then bright yellow 
and remain on the base of the shoot until the leaves have grown to a third of their size. The leaves 
are composed of five to seven leaflets, and are borne on slender petioles four to six inches in length, 
with enlarged ends often covered above with clusters of dark brown chaff-lke scales surrounding the 
bases of the petiolules; the leaflets are oval, oblong, or obovate, acuminate at the apex, and gradually 
contracted at the other end. They are finely and unequally serrate, and are at first sessile, but become 
slightly petiolate at maturity. Like the petioles, they are covered when they first appear, especially on 
the lower surface, with short soft pubescence; this soon disappears, and at maturity they are glabrous 
with the exception of a few hairs along the under side of the midribs and in the axils of the principal 
veins. They are yellow-green and paler on the lower than on the upper surface, with conspicuous yel- 
low midribs and primary veins. The inflorescence, which appears from April to May, is five or six 
inches in length, two or three inches in breadth, and more or less densely covered with pubescence, the 
short branches being usually four to six-flowered. The pale yellow-green flowers are mostly unilateral, 
