a a 
a 
ASCLEPIAS ASCLEPIADACEZ 441 
GOMPHOUARPUS 
ed on a column whichis shorter than the anthers. Anthers tip- 
ped with an inflexed or sometimes erect membrane; the pollinifer- 
ous cells lower than the stigma. Pollen masses suspended, 
attached in pairs to the glands of the stigmatic ring. 
A. speciosa Torr. Ann. Lyc. N. Y. ii, 218. Finely canescent-tomen- 
tose, rarely glabrous with age: stem stout, 2-6 feet high : leaves from sub- 
cordate-oval to oe thickish transversely veined, 3-8 inches long, short 
tioled : peduncles shorter than the leaves : calyx-lobes densely tomentose, 
anceolate, 2 lines long, closely reflexed : lobes of the corolla oblong, more 
than twice as long as the calyx, reflexed: hoods 4-6 lines long, spreading, 
the dilated body and its short inflexed horn not surpassing the anthers, 
but the centre of its truncate summit abruptly produced into a lanceolate- 
ligulate thrice longer termination: staminal column hardly any: wings of 
the anthers notched and obscurely corniculate at base: follicles echinate 
with soft spinose processes, densely tomentose, 2-4 inches long. Along 
streams, California to Washington, Nebraska and Arkansas. 
A. cryptoceras Watson Bot. King 283 t. 28. Glabrous: stemdecum- . 
bent, 6-10 inches long, simple: leaves 3-4 pairs, rounded-ovate, 1-2 inches 
long, on very short petioles: umbel solitary and terminal, sessile, few- 
flowered : corolla-lobes ovate-lanceolate, spreading, greenish-yellow, 5 lines. 
long: hoods of the crown 3 lines long, equalling the disk, purple, ovate, 
abruptly pointed with 2 short recurved beaks; horns short, incurved, not 
at ali oneeteds follicles 1-2 inches long. Eastern Oregon to Utah and Nev. 
A. Mexicana Cav. Ic. i, 42, t. 58. Glabrous: stems erect, 3-5 feet 
high : leaves in whorls of 2-6, sometimes also in axillary fascicles, petioled, 
linear or narrowly lanceolate, 3-6 inches long by 2-6 lines broad: umbels 
densely flowered: pedicels and flowers softly puberulent: calyx-lobes 
ovate-lanceolate, reflexed : corolla-lobes oblong, 2 lines long: hoods broadly 
ovate, entire, shorter than the anthers, exceeded by the stout subulate 
horn: follicles smooth, narrow, 2-3 inches long. Along streams, Wash- 
ington to California, Arizona and Nevada. 
2 GOMPHOCARPUS R. Br. in Mem. Wern. Soc. i, 37. 
Our species herbs with erect stems, opposite leaves and num- 
erous flowers in terminal and axillary umbels. Differing from 
Aselepias only in not having horns nor crests to the hoods. 
Calyx 5-parted, the divisions soon reflexed. Corolla rotate, 5- 
parted, dextrorsely valvate-convolute in the bud, soon reflexed. 
Crown consisting of 5 distinct cucullate appendages, destitute of 
crest or horn and more or less elevated on acolumn. Body of the 
stigma 5-angled. 
G. cordifolius Gray Bot. Cal. i, 477. Glabrous: stems rather stout, 
2-3 feet high : leaves ovate or ovate-lanceolate, with cordate clasping base, 
acute, 2-5 inches long: umbels loosely many-flowered: slender pedicels 
long and filiform, equalling or shorter than the peduncle: calyx villous- 
ubescent: corolla dark red-purple, the lobes oval or oblong, 3-4 lines long: 
oods erect on the summit ofthe short column, purplish, thin, ventricose, 
with dorsally truncate summit, produced at the margins into subulate 
slender ascending cusps, equalling the anthers, a narrow fissure down the 
ventral side: follicles ovate-lanceolate, smooth and glabrous, erect on the 
deflexed pedicel- Ondry hillsides, southern Oregon and California. 
