396 OCTANDRIA. MONOGYNIA, acer. 



ripens, when they are 2 — 3 inches long. Calyx coloured, peta- 

 loid, smooth, 5-cleft ; segments oblong, obtuse. Petals 3 — 6, 

 red, ovate, obtuse, longer than the calyx. Stamens 5 — 6, about 

 as long as the corolla, with a globular nectary at the base ; cw- 

 thers red. Germen 2-lobed ; stigmas long, recurved, pubes- 

 cent. Fruit with 2 long membranaceous wings, which are 

 very slightly arcuate. Staminiferous : Pedicels about one- 

 fourth of an inch long. Segments of the ca/z/x oblong-spathu- 

 late, red, smooth. Petals linear-oblong. Filaments 6, three 

 times as long as the calyx, with a hemispherical nectary at the 

 base of each. 

 Hab. In moist woods; common. April. Red or Swamfi Maple. 



2. A. dasycarpum Ehrk.: leaves palmately 5-lobed; 

 truncate at the base, inciscly toothed, smooth aqd whitish- 

 glaucous beneath; sinuses obtuse ; pedicels short; germens 

 tomcntose. IV Hid. Spec. IV. p. 485. Purs h Fl. I. p* 

 266. Elliott Sk. I. p. 4i9. JVm H. Gen. I. p. 251. 

 A. eriocarpum M i c h, 'Fl. 11. p. 253. Mich. Jil. Arh. II. 

 p. 205. t. 13, 



A large tree. Trunk low, with \*ery numerous divergent 

 branches. Leaves on very long petioles, divided below the 

 middle into 5 lobes, at first pubescent, but at length smooth, 

 and almost white beneath ; the spaces between the incisions 

 rounded at the base. Flowers polygamous, aggregated in 

 fives, greenish-yellow ; fiedicels scarcely more than 2 lines 

 long. Perfect: Ca/j/jr membranaceous, obscurely 5 — 7-tooth- 

 cd. Petals 0. Stamens 3 — 6, very short, without glands at 

 the base. Germen white, tomentose, 4-seeded ; 2 of the seeds 

 abortive ; styles 2, distinct ; stigmas linear, glandular recurv- 

 ed. Fruit with large wings, dilated towards the extremity. 



Hab. On the banks of rivers. Staten-Island, New-York. 

 Cooper. Dcerfield, Massachusetts. Cooley and Hitch- 

 cock. April. White or Soft Maple. 

 Sandy River, Maine, according to the younger Mic haux. 

 is the most northern limit of this tree. The sap yields a good 

 sugar, but in smaller quantity than in A. saccharinum. 



Z. k. harhatum M i c h. : leaves ovate-cordate, with 3 

 short lobes, unequally serrate, glaucous beneath and pubes- 

 cent on the nerves; peduncles hairy; those of the staminiferous 

 flowers branched; of the pistilliferous simple; wings of the 

 samaras erect. Mich. Fl. II. p. 252. Willd. Spet:. IV. 

 p. 989, Pursh Fl.l.p. 2GQ. E Ilio tt Sk. I. i^. A5\. 



A small tree. Leaves small. Flowers pale green, polygamous, 

 Ca/y .r densely bearded within. Mich, and Ph. 



Hab. In deep pine and cedar swamps. New-Jersey to Caro- 

 lina, Pur s h. + 



4- A. saccharinum L. : leaves palmately 5-lobed, sub- 



