476 ASCLEPIADACEJi]. Aadepius. 



slender-fusiforiu, smooth. — DC. Prodr. viii. 569; Watson, Bot. King Exp. 282. 

 A. macropliylla, Nutt. PI. Gtunb. 180. 



Hillsides, &c., throughout the State, e.vteuding noithvvard and eastward into Oregon uud Nevada. 



+- 4- 1 foods broad and veutricose or saccate, truncate or notched at the broad .^nmiiiil, 

 viokI/i/ iitrliidiinj t/ic a/roju/li/ incKrvcd-unciiiate horn, which rises from near the snm- 

 viit : leaves broad and /)ru/)ortiuii(dli/ lan/e : Jiowers rather large : corolla greenish- 

 or yellowish-ivhite : the hoods usually Jlesh-colored. 



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



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

 ple : Iciivos (i[)p(jailc, liroadly ovato or orbicular, an inch or two long, very short 

 petiolcd : unibch nearly sessile, Icnv-lluwured : lobes of the corolla oblong-ovate, 

 nearly half an inch long : saccate huuda sessile (a quarter of an inch long), 2-clei't at 

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

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

 Kep. 317. 



Mountains near Humboldt Lake, Nevada, Watscm. May therefore be expected on the eastern 

 borders ol' California. Extends to Utah and Idaho, Nuttall, Fremont. 



++ ++ White-woolly, even to the outside of the corolla in bud, but the ivool sometimes 

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

 hoods 2 lines long, the latter open down the inner side : ovaries glabrous, but the 

 young follicles tomentose. 



5. A. vestita, Hook. & Am. 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, luany-llowered : hoods slightly raised on the short lilanumt-sheath, 

 obli(piely truncate, so as to bo broadly rliond)ic when outspread and the lateral 

 angles acutc^ a bntadiy triangular or vomer-.sha|»ed ascending croat rather than horn 

 attached to nearly tlie whole length of tlio liood and not exceeding it. — Uot. 

 Jkechey, 3(53 (not Hook. Mot. Mag. t. 410(1); Engelm. in Am. Nat. ix. 349. 

 A. eriocarpa, Torr. in Pacif. It. Jtep. iv. 128, not of Benth. 



From near San Francisco and Monterey to tlie 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-Howered umbels an 

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

 elevated, broader tiiuu high, ventricose, the ti'uncate upper portion emarginato at the 

 back, much e.vtendcd inward horizontally, and enclosing the horizontally [)ruduced 

 vomer-shaiHid cre.st rather than horn. — PI. llartw. 323 ; Engelm. 1. c. 



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

 Cleveland, Painter. Flowers commonly larger than in the foregoing : the horizontal ciest twice 

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



7. A. leucophylla, Engelm. Stem 2 to 4 f(!et higli : leaves as in A. vestita, 

 but closely sessile: peduucles of the many-llowered umbels longer than the pedicels, 

 as in A. eriocarpa : hoods erect, much narrower, oblong (or when 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. 

 Nat. ix. 349. 



Southeastern borders of the State ; Frovidence 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. 



