476 ASCLEPIADACE^. Asdepias. 



slender-fusiform, smooth. — DC. Prodr. viii. 569; Watson, Bot. King Exix 282. 

 A. macrophylla, Nutt. PI. Gamb. 180. 



Hillsides, &c., throughout the State, extending northward and eastward into Oregon and Nevada. 



-i- 4- Hoods hroad and ventricose or saccate, truncate or notched at the broad summit, 

 mostly including the strongly incurved-uncinate horn, tvhich rises from near the sum- 

 mit : leaves hroad and proportionally large : flowers rather large : corolla greenish- 

 or yellowish-white : the hoods usually flesh-colored. 

 ++ Glabrous throughout, low: leaves 3 or 4: pairs : hoods saccate, open only at top. 



4. A. cryptoceras, S. Watson. Stems decumbent, a span to a foot high, sim- 

 ple : leaves opposite, broadly ovate or orbicular, an inch or two long, very short 

 petioled : umbels nearly sessile, few-flowered : lobes of the corolla oblong-ovate, 

 nearly half an inch long : saccate hoods sessile (a quarter of an inch long), 2-cleft at 

 the summit, each lobe anteriorly abruptly subulate-pointed, the slender sickle-shaped 

 horn included. — Bot. King Exp. 283, t. 28. Acerates latifolia, Torr. in Fremont 

 Piep. 317. 



]\Iountains near Humboldt Lake, Nevada, JVnfson. May therefore be expected on the eastern 

 borders of California. Extends to Utah and Idaho, Nuttall, Fremont. 



+^ ^4. White-woolly, even to the outside of the corolla in bud, hut the wool sometimes 

 deciduous vnth age, leafy : lobes of the corolla oblong-ovate, about 3 lines, and the 

 hoods 2 lines long, the latter open doivn the inner side : ovaries glabrous, hut the 

 young follicles tomentose. 



5. A. vestita, Hook. & Arn. Stem a span to 2 feet high, stout, simple : leaves 

 opposite, ovate-lanceolate or oblong-lanceolate, almost sessile (3 to 6 inches long), all 

 but the lower gradually acuminate, the base of the upper often cordate : umbels 

 almost sessile, many-flowered : hoods slightly raised on the short filament-sheath, 

 obliquely truncate, so as to be broadly rhombic when outspread and the lateral 

 angles acute, a broadly triangular or vomer-shaped ascending crest rather than horn 

 attached to nearly the whole length of the hood and not exceeding it. — Bot. 

 Beechey, 363 (not Hook. Bot. Mag. t. 4106); Engelm. in Am. Nat. ix. 349. 

 A. eriocarpa, Torr. in Pacif. Pu Eep. iv. 128, not of Benth. 



From near San Francisco and Monterey to the foot-hills of the Sierra Nevada. In one or two 

 of the hoods the crest or horn has been found nearly wanting. Follicles ovate, minutely tomen- 

 tose-pubescent. 



6. A. eriocarpa, Benth. Stem 2 or 3 feet high, often sharply angled : leaves 

 not rarely 3 or 4 in a whorl, and the upper occasionally alternate, oblong-lanceolate 

 or oblong, acute (4 to 7 inches long) : peduncles of the many-flowered umbels an 

 inch or two long, equalling or exceeding the pedicels : hoods rather conspicuously 

 elevated, broader than high, ventricose, the truncate upper portion emarginatB at the 

 back, much extended inward horizontally, and enclosing the horizontally produced 

 vomer-shaped crest rather than horn. — PI. Hartw. 323 ; Engelm. 1. c. 



Dry hills, from Monterey (Harhveg) to Owen's Valley (Br. Horn), and behind San Diego, 

 Cleveland, Palmer. Flowers commonly larger than in the foregoing : the horizontal crest twice 

 longer than high, conformed in shape to the upper part of the hood, which merely encloses it. 



7. A. leucophylla, Engelm. Stem 2 to 4 feet high : leaves as in A. vestita, 

 but closely sessile : pt-duncles of the many-flowered umbels longer than the pedicels, 

 as in A. eriocarpa : hoods erect, much narrower, oblong (or wlien outspread obovate) 

 with rounded entire summit ; the falcate or claw-shaped horn attached below the 

 middle, ascending and incurving over the stigma, longer than the hood. — Am. 

 Kat. ix. 349. 



Southeastern borders of the State ; Providence Mountains (Dr. Cooper) and southward {Dr. 

 Palmer) ; thence to S. Utah, Parry. Woolliness fine and white, but deciduous, as in A. vestita. 

 Dr. Palmer's specimens are green and glabrate. Corolla greenish ; the hoods yellowish. <. 



