ACER. ACEKACE.E. i!7 



FORSELLESIA. 



* Flowers in racemes: body of the fruit hispid. 



A. uiacrophyllum Pursh Fl. 2(57. (LARGE LEAVED MAPLF ). A tree 

 5090 feet high, 13 feet in diameter: leaves <j 12 inches long, nearly 

 as broad, cordate with a deep sinus, deeply 3 5-cleft, the segments 

 cleft into 35 sinuate, acute lobes, pubescent beneath when young: 

 flowers yellow, fragrant, in crowded pendent racemes 3 6 inches long, 

 appearing after the leaves: calyx petaloid. cainpanulate, the broad 

 obovate segments 23 lines long: petals obovate, about equalling the 

 sepals: stamens 812 exserted, filaments hirsute at base style longer 

 than the stamens, deeply 2-lobed: fruit densely hispid, the glabrous 

 wing IMj 2 inches long. In mountain ravines and river bottoms, Brit. 

 Columbia to California and Idaho. 



* * Flowers in loose umbel-like corymbs or fascicles: fruit 

 smooth. 



A. glabrum Torr. Ann. Lye. X. Y. ii. 172. ( SMOOTH MAPLE-). A shrub 

 or small tree 6 30 feet high, 2 8 inches in diameter, glabrous through- 

 out except the bud scales which are densely villous inside: leaves 

 round-cordate with shallow sinus, 2 4 inches broad, nearly as long, 

 more or less deeply 3-lobed or parted, the ovate acuminate lobes doubly 

 serrate with acuminate teeth, conspicuously veined and reticulated: 

 flowers few, greenish-yellow, somewhat corymbose, on short 2-leaved 

 branchlets, appearing after the leaves: calyx canipanulate, deeply 5- 

 cleft, the spatulate segments about 2 lines long: stamens 8, shorter 

 than the spatulate petals: fruit very smooth, with slightly spreading 

 wings, about an inch long. Along streams and on the highest moun- 

 tains. Vancouver Island to California and the Rocky Mountains. 



A. circiiiattim Pursh Fl. 2(>(>. ( VINE MAPLE?). A large shrub 1030 

 feet high, visually declined and somewhat viny: leaves round-cordate 

 with a narrow shallow sinus, 35 inches long nearly as broad, 79 

 lobed nearly >o the middle, the acute lobes doubly and sharply serrate, 

 villous beneath and on the veins above when young, becoming glab- 

 rate: flowers in loose 10 20-flowered terminal corymbs; calyx dark 

 red. deeply 5-lobed or parted, the ovate acute sepals 2 3 lines long, 

 spreading: petals greenish white, about half as long as the sepals, 

 ovate, acute, erect: stamens 8, exserted: style short: ovary villous: 

 fruit 1016 lines long, the wings spreading at right angles to'the pedi- 

 cels. In forests and along sreams, Alaska to California, west of the 

 Cascade Mountains. 



2 FORSELLESIA Greene Eryth. 1, 20(1. 



GLOSSOPETALON Gray PL Wright, ii, ,.'',>. f. !J. not J-Vhreber. 

 Low and rigid shrubs with slender spim-scent branches, and 

 small alternate simple entire leaevs, which separate in age by an 

 indistinct articulation from a dilated scale-like minutely 2-*stip- 

 ulate base; the setaceous-subulate stipules adnate to the scales, 

 and small solitary flowers, terminating short axillary branchlets, 

 or spur-like fascicles. Calyx deeply 4 5-cleft, persistent, its flat 

 base within filled by an 8-10-lobed perigynous disk ; petals 4 or 

 ~>, inserted on the margin or under the edge of the disk, some- 

 what withering-persistent. Stamens 8 or 10 inserted at the sin- 

 uses of the disk, shorter than the calyx; filaments subulate, 

 persistent : anthers didymous. Ovary 1-celled, of a single ovoid 

 carpel, with style extremely short or none, and a depressed en- 

 tire or obscurely 2-lobed stigma. Ovules 2, collateral or nearly 

 so inserted on the ventral suture barely above the base of the 



