kCER. OCTANDRIA. MONOGYNIA. 397 



cordate at the base, acuminate, glaucous beneath ; peduncles 

 corymbose, nodding. W iJ Id. Spec. \Y. p. 9S5. Mich. 

 Fl. II. p. 25i'. M i c h. fil. Arb. II. p. 218. t. 15. Pnrsh 

 Fl. I. p. 2^6. B ig. iiosl. p. 247. Elliott Sk. I. p. 

 450. Wang. Jmer. 36. t. 11. f. 26. Cold. Novel. 85. 



A large tree, often 2 feet or more in diameter, with a smooth 

 whitish bark, and compact wood. Lea-ves on long petioles, 

 truncate and a little cordate at the base; lobes acuminate, 

 each wiili several large teeth; sinuses rounded. Flowers 

 on filiform, very long pilose peduncles, yellowish. Fruit tur- 

 gid, with 2 long narrow wings. 



Hab. In woods. April. Sugar or Rock Mafile. 



An exceedingly valuable tree, both for its timber and the 

 sugar obtained from its sap. 



b. A. nigrum M i c h. f. : leaves palmately 5-lobed, cor- 

 date, with the sinus closed ; lobes divaricate, sinuate-subden- 

 tate, pubescent beneath ; flowers corjmbed ; samara? turbid, 

 subglobose. M i c h. f. A,b. II. p. 238. t. 1 6. Pu r s h ^Fl. 

 J. p. 266. Elliott Sk.h ^.A50. 



A large tree. Leaves large, dark green, 5-lobed, with the 2 in- 

 ferior lobes much smaller. Flowers on long slender pendu- 

 lous pedicels, yellowish, apetalous. Fruit with long pale yel- 

 low wings. 



Hab. In mountainous regions. Near Windsor, on the Connec- 

 ticut River, Vermont, its north-eastern limit. Mic hau x f. 

 On the Fishkill Mountains, New-York. In the western parts 

 of the State of New-York; abundant, &c. April. 



Black Sugar Mafile. — Sugar-tree. 

 This tree yields sugar like A. sacc/iarinum, from which it 

 differs very little. 



6. A. pennsyhanicum L.: leaves with 3 acuminate lobes, 

 rounded at the base, acutely dentate, smooth; racemes sim- 

 ple, pendulous. fVilld. Spec. \Y.p.9Bd. Mich. FL II. 

 p. 252. E lliot t Sk.\. p, 451. A. striatum Du Roi 

 harhk.l.p.B.i.\' Lam- Enc. II. p. 317. Wang. Jimer, 

 29. t. 1 2. f. 2. P ers. Syn. I. p. 4 1 7. M i c h. f. Arb. II. 

 p. 242. t. 17. Pur sh FL 1. p. 267. Nutt. Gen. I. p. 

 253. 



A shrub seldom exceeding 10 feet in height ; bark green, marked 

 witii black stripes. Leaves nearly as broad as long, rounded 

 and slightly cordate at the base, 3-lobed above; the lobes 

 much acuminate. Racemes terminating the extremity of the 

 young branches, 10 — I4-flowered; Jioivers greenish-yellow. 

 Calyx 5-cleft. Petals 5, oblong, obtuse. Stamens 8 ; anthers 

 pale yellow. Wings of \.he fruit arcuate, moderately spreading. 



Hab. In shaded rocky situations on moimtaini. New-England 



