OCTAXDRIA MONOGYNIA 215 



oblong, ralhcr obtuse. Petals bright purple (or often yellowish), linear-oblong, 

 n uTow, alternate with and about as long as the calyx-segments. Stamens most- 

 ly 5, rather shorter than the petals, inserted under the edge of a hypogynous 

 crenate-lobed disk; anthers dark purple. Ovary twin, or 2 lobed, compressed, 

 dilated and truncate at summit, smooth; stigmas long, filiform, pubescent, sessile 

 (or rather 2 styles ?). Fruit in pairs, diverging; each samara with a veined mem- 

 branaceous wing near an inch lornr, thickened and obtuse on the outer margin, 

 very thin on the inner margin. Pedicels of the flowers about half an inch long, oi 

 the fruit 1 to 3 inches long. 



Hub. Moist low grounds ; swampy woodlands : common. FL April. Fr. Sept. 



Obs. The variety with yelloxcish flowers, noticed by Marshall, is very frequent 

 here. The wood of this species, in which the fibres arc often handsomely curled, 

 is much used in the manufacture of tables, chairs, gun-stocks, &c. and the refuse 

 timber mikes good fuel. The bark affords a dark purplish-blue dye, and makes 

 a pretty good bluish-black ink. All the species yield more or less Sugar from 

 the sap. 



2. A. eiuocaupum, Mx. Leaves palmately 5-lobed with the sinuses 

 deep ami rather obtuse, silvery-glaucous beneath, subcordate or often 

 truncate at base, unequally and incisely toothed, tcetli acuminate ; 

 flowers apctalous, aggregated, on short pedicels ; ovary tomentose. 

 Beck, Hot. p. 63. Icox, Mx.f. Sylva. 1. tab. 40. 



A, glaucum. Jllavsh. Arbust. p. 2. 



A. dasycarpum, WilliL Sp. 4. p. 985. l J crs. Syn. 1, p. 417. Ait. 

 Keio. 5. p. 446. MuhL Catal. />, 95. Pursh, Am. 1. /;. 266. JVttf*. 

 Gen. 1. p. 252. Bart. Phil. 1. p. 185. Ell. Sk. 1. p. 449. Bigel. 

 Jlost.p. '-Vi l J. Torr. FL I. p. 396. Ejusd. Comp. p. 1G ( J. Lindl. ila- 

 cy% p. 864. hook. Am. I. p. 1 13. Eat. Man. p. 2. 

 Woollt-fhuitki) Acer. Vulgo— Silver-leaved Maple. White Maple. 



Stem 40 to GO feet high, and often 2 feet or more in diameter at base, much 

 branched ; the young branches virgate, slender, somewhat pendulous or inclining 

 to dro >p. Leaves 3 to 6 inches l<>ng, and nearly as wide as long, deeply 5-lobed ; 

 lobes narrowed at base, unequally and acuminately incised-dentate, or often si< - 

 lobed ; the young leaves pubescent, at length smooth, and bluish white or glau- 

 cous beneath ; petioles 2 to 4 or 5 inches long. Flowers on short pedicels, aggrega- 

 u d,pale yellowish-purple. Stamens 3 to 5 or 6. Ovary tomentose. Fruit with 

 I irge wings (near 3 inches long, and 3 fourths of an inch wide), dilated towards the 

 extremity, and curved on the outer or thick margin. 



/lab. Bank of the Schuylkill, near Black rock : rare. Fl. April. Fr. J. me. 



Obs. This is a rare tree in Chester County, and has only been found along 

 Schuylkill. It is much cultivated of late, as an ornamental shade.— particularly 

 in our cities ; and is often mistaken for the true Sugar Maple. The large soma a 

 has some resemblance Co the wing of a huge grasshopper. The young leaves emit 

 a peculiar and rather disagreeable odor. 



3. A. sacciiarinum, L. Leaves broad, subcordate at base, palinatcly 

 5-lebed with the sinuses obtuse, lobes acuminate, coarsely sinuate- 

 dentate; flowers pendulous, on long corymbose pedicels; fruit turgid, 

 smooth. Beck, Bot.p. 63. Icox, Mx.f. Sylva. \. tab. 42. 



A. saccharum. Marsh. Arhust. p. 4. 

 Saccharine Acer. Vnlgo — Sugar Maple. 



Stem 40 to GO or 80 feet high, and 2 to 3 feet in diameter, Branching, with a 

 smoothish light colored lark. Leave? 3 to 5 inches long, and generally rath< r 



2l # 



