150 LEGUMINOS/. ASTRAGALUS. 
teeth shorter than the tube: ovary canescent; pods very large, inflated, 
obovoid, obtuse, tapering into a very short stipe, glabrous, thin and 
membranaceous, whitish and beautifully mottled with purple, nearly 2 
inches long. Oregon to California and Nevada. . 
A. ceramicus Sheld.1.c. 19. <A. pictus Gray, not Steud. Hoary with 
a loose silky pubescence: stems erect, slender, branching, from filiiorm 
roots, ascending, 10-12 inches high: lower petioles short, pinnately 3-5- 
foliolate, with narrowly linear leaflets, the upper ones elongated. and 
‘filiform, mostly leafless; stipules lanceolate-subulate, the lowermost 
united, the upper ones distinct: racemes on filiform peduncles shorter 
than the leaves, 7-10-flowered: pods. 6-18 lines long, ovoid, scarcely 
pointed, membranaceous and much inflated, stipitate, pendent. Idaho to 
Nebraska and New Mexico. 
A. Cusickii Gray Proc. Am. Acad. iii, 370. Many-stemmed from a 
thick perennial root, strict, smooth or nearly so: stipules scarious, tri- 
angular, acuminate, slightly connate; leaflets 13-17, remote, linear, 5-7 
lines long: peduncles exceeding the leaves, bearing few to several white 
or yellowish flowers in a loose raceme; calyx cylindrical, more or less 
dark-pubescent, the short triangular teeth not 44 as long as the tube: pods 
oblong,. with a short incurved acute beak, an inch long or less, contracted 
at base to a short stipe about equalling the calyx, glabrous. Powder river 
valley eastern Oregon. 
* * * Annual: pod sessile, not mottled ; flowers small, ochroleucous 
or purplish. Low; leaflets linear or linear-oblong, grey with strigu- 
lose hairs. 
A. Geyeri Gray |. c. 214. Subcanescent with an appressed hairy pu- 
bescence: stem somewhat simple, 3-6 inches high, annual: leaflets linear 
or oblong, obtuse, glabrous above: peduncles shorter than the leaves, 3-5- 
flowered; calyx campanulate, its subulate teeth about, equalling the tube; 
corolla 3 lines long, ochroleucous; pods 8-9 lines long, membranaceous, in- 
flated, ovate-lunate with an incurved acumination, sessile, not mottled, 
finely reticulated, glabrous, 1-celled. Montana and southern Idaho to 
Nevada and California. 
§ 11. Muicrocysrer Gray |. c. 219. Pod membranaceous or 
chartaceous, small, globose or ovate, inflated, sessile, neither su- 
ture intruded. Diffuse or procumbent perennials, mostly small 
and slender; flowers small and usually few. 
A. microeystis Gray 1. c. 220. Cinereous-pubescent: stems slender, 
procumbent, from a woody root, much branched: stipules scarious, con- 
nate or the uppermost nearly distinct; leaflets 9-13, oblong or oblong-lan- 
ceolate, obtuse : racemes slender, 5-12-flowered ; calyx hairy, the setaceous- 
subulate teeth about as long as the short-campanulate tube; corolla violet 
or whitish, the deeply emarginate upper petal slightly exceeding the lat- 
eral ones, twice as long as the incurved keel: pods globose’ovate, 3 lines 
long, thin-membranaceous, gray-pubescent. Brit. Columbia to Washing- 
ington, Idaho, Wyoming and Montana. ; 
§ 12. Scyrocarpi Gray 1. c. 222. Pod coriaceous, ovate or 
oblong, rarely cylindrical, turgid, not sulecate and neither suture 
intruded. | 
A. Chameleuce Gray Ives Rep. 10. Perennial; silvery-canescent with 
a dense silky pubescence: stems numerous, 1-6 inches long, prostrate, or 
nearly acaulescent: stipules ovate, membranaceous, free; leaflets 3-7, 2-4 
lines long, oblong, obovate or oval: peduncles shorter than. the leaves, 
slender, 3-8-flowered; calyx cylindrical, its subulate teeth much shorter 
than the tube: corolla light violet, 9 lines long: pods 6-12 lines long 
