ASTRAGALUS. LEGUMINOS 4. 145 
or ovate, straight, usually more or less compressed or obcom- 
pressed-triangular, dorsally sulcate 2-cellu.l, pubescent, many- 
ovuled, erect: stipules more or less sheathing: flowers in dense 
spikes or small heads: perennials. 
A. adsurgens Pall. Astrag. 40. Cinereous with minute appressed 
pubescence or glabrate: stems rather stout, ‘4-18 inches high, ascending or 
decumbent: leaflets 13-19, narrowly to linear-oblong, 10-12 lines long, ob- 
tuse, pale green: peduncles longer than the leaves; flowers erect, in ob- 
long to subglobose spikes; tube of the calyx long-campanulate, twice as long 
as the setaceous teeth, subvillous with partly black hairs; peta!s bright 
purple, the upper one about one-third longer than the others: pods coria- 
ceous, erect, sessile, ovate-oblong, 4-5 lines long, straight, usually tri- 
angular compressed, dorsally sulcate, pubescent with appressed hairs, 
fe age Plains of eastern Oregon to Brit. Columbia and western 
ansas. 
A. hypoglottis L. Mant. ii, 274. Somewhat hirsute: stems 6-24 inches 
long, slender, diffusely procumbent or ascending: leaflets 15-21, oblong or 
obovate to elliptical, obtuse or retuse; stipules lanceolate, more or less co- 
hering: peduncles longer than the leaves; bracts longer than the calyx, 
lanceolate: calyx blackish-pilose, its subulate teeth as long vas the tube 
petals bright purple: pods ovate, triangular, compressed, silky-villous, 
very shortly stipitate, 6-8-seeded. Alluvial plains, southeastern Oregon 
Aud Washington to Colorado and Hudson Bay. 
§ 5. Dipymocarrr Gray 1. ¢. 188. Pods thin-coriaceous, ob- | 
compressed-didymous with a narrow perfect septum, transversely 
ridged or reticulated, at length separating into two 1—2-seeded 
divisions, mostly deflexed; ovary short-stipitate : caulescent an- 
nuals. 
A. Catalinensis Nutt. Pl. Gamb. 152. A. nigrescens Nutt. not Pall. Cin- 
ereous with a short appressed pubescence: stem annual, 2-6 inches high, 
branching from the base: stipules scarious, triangular-ovate, acuminate, 
distinct, nearly free; leaflets 7-11, cuneate-oblong, obtuse or retuse, a line 
long, pubescent beneath, sometimes smooth above; peduncles longer than 
the leaves; flowers 4-8, in a subcapitate raceme, on very short spreading 
pedicels, soon deflexed, a line long; calyx campanulate, pubescent with 
dark colored hairs, the broadly subulate teeth twice longer than the tube: 
pods broadly ovate, obcompressed, pubescent, 2-celled by the intrusion of 
the dorsal suture, the ventral suture obtuse, several-ovuled. On dry hill- 
sides and banks, both sides of the Siskiyou Mountains near Ashland, 
Oregon. ; 
§ 6. Micrantut Gray l.c. Pod coriaceous, oblong, lanceo- 
late, or linear, straight or curved, sessile, dorsally sulcate, the 
ventral suture rather prominent, 2-celled, many-ovuled. 
A. drepanolobus Gray |. c. xix, 75. Perennial: strigose-pubescent 
throughout; the numerous stems ascending or decumbent, diffusely 
branched, 6-12 inches long: leaflets 9-11, obovate, usually emarginate, 
4-6 lines long: peduncles exceeding the leaves, rather loosely-flowered; 
calyx short-campanulate, its subulate teeth shorter than the tube: pod 
linear-oblong, compressed, very faleate, 2-celled by the intrusion of the 
dorsal suture, many-ovuled. On gravelly bars of the John Day river near 
its junction with the Columbia. . 
A. umbraticus Sheld. l.c. A. sylvaticus Watson, not Willd. Gla- 
brous: stems numerous from a stout perennial root, ascending or erect, 
12-18 inches high, branching: leaflets 17-21, oblong, retuse, 4-9 lines long: 
peduncles equalling or exceeding the leaves; racemes’ close, rather few- 
