152 | LEGUMINOS#. AS#RAGALUS. 
A. sclerocarpus Gray l.c. Cinereous with a very short appressed 
pubesceace, much branched: leaflets 13-19, linear, 4-6 lines long: pedun- 
cles exceeding the leaves, loosely rather few-flowered; calyx cylindrical, 
pubescent with black hairs, 3 lines long, its short triangular teeth not half 
as long as the tube: pods canescent-puberulent, lanceolate, acuminate, 
falcate or nearly hamate, an inch or more long, attenuate at base to a stipe 
an inch or more long. On sandy banks and plains, along the Columbia 
river above The Dalles. sles vale 
A. speirocarpus Gray l.c.. Stems slender, decumbent or ascending, | 
10-12 inches long, cinereous: stipules very small. triangular, obtuse; 
leaflets 9-13, oblong or cuneate, obtuse or retuse, 1-4 lines long, pubescent 
both sides: peduncles about equalling the leaves, loosely rather many- 
flowered; flowers yellowish-white, on very short pedicels, soon deflexadi 
calyx cylindrical, 3-4 lines long, pubescent with black hairs, its short tri- 
angular teeth not half as long as the tube: pods linear, acuminate, pubes- 
cent, coiled into a short. spiral, attenuate at base to a stipe a little longer 
than the calyx. Along the Columbia river above The Dalles. 
Var. faleiformis Gray Pot. Cal. i, 152. Stipe filiform, 6-9 lines long, 
nearly the length of the thinner-walled and less turgid faleate or merely 
hooked pod. Brit. Columbia to Washington, Nevada and California. 
A. Gibbsii Kell. Proc. Cal. Acad. ii, 161. Cinereous-pubescent: stems 
many from a thick perenniai root, rather stout, 10-12 inches high: leaflets 
11-15, oblong with a cuneate base, truncate or retuse, 6-8 lines long: pe- 
duncles exceeding the leaves; flowers numerous, in a rather dense raceme, 
reflexed on short spreading pedicels; calyx cylindrical, gibbous at base, 
5-6 lines long, the triangular teeth not more than ¥% as long as the tube: 
ods linear, about an inch long, curved or annular, very acute, finely pu- 
Sere attenuate at base into a stipe twice as long as the calyx. Plains 
and hillsides, eastern Oregon and Idaho to Nevada. . 
§ 14. Homatopr Gray |.c. Pod flattened or compressed, 
straight, margined by the nerve-like sutures, coriaceous or char- 
taceous, sometimes stipitate. | 
A. collinus Doug]. in G. Don. Gen. Syst. ii, 256. Stems erect or dif- 
fuse, 6-12 inches long, numerous, from a stout perennial root, grayish- 
pubescent: leaflets 19-23, linear or oblong-linear, obtuse, attenuate at 
base, 6-12 lines long; stipules very small, oblong, acuminate ; peduncles 
twice ‘the length of the leaves; flowers whitish, in dense oblong racemes 
refracted on suberect pedicels ; calyx tubular, densely hirsute ; 4-6 lines long, | 
its triangular teeth about half as long as the tube: pods pubescent, linear- 
oblong, attenuate at base to a stipe, somewhat yest an inch long with ~ 
the stipe reflexed. In rocky gulches and hillsides of the Blue Mountains 
of Oregon. 
A. Californicus Greene Bull. Cal. Acad. i,n.3, 157. Stems numerous, 
from.a stout perennial root, rather slender, 8-12 inches high, usually sim- 
ple, minutely pubescent: leaves 2-4 inches long: stipules triangular, 2 
lines long, nearly as broad; leaflets 11-19, cuneate-oblong to linear, obtuse, 
pubescent both sides with white hairs, 4-6 lines long by 1-3 broad, peti- 
olulate: peduncles longer than the leaves; flowers ochroleuzous, 6-8 lines 
long, pendent, on erect pedicels in dense seas racemes; bracts lanceolate 
longer than the pedicels; calyx tubular, 3-5 lines long, pubescent with 
minute brownish hairs, its short triangular teeth about a line long: pods 
1-2 inches long by 2 lines broad, acute, attenuate below to a slender stipe 
as long'as the calyx, strongly reticuluted and very minutely pubescent, 
compressed or somewhat turgid. In rich alluvial:soil, valley of the Klam- 
ath river near Yreka, California, no doubt in adjacent Oregon. 
A. Tweedyi Canby Bot. Gaz. xi, 150. Stems erect, 12-18 inches high, 
