r'ouo-scierocarpi. 147 
4-6 mm. long, racemes short and on a very short peduncle, clustered 
^mong the leaves in fruit. Leaflets 3-10 pairs, not jointed to rachis. 
From southwestern Kansas on the Plains, to the mountains and north- 
ward to the Saskatchewan, westward through northern Colorado to 
western Wyoming, growing in rather alkaline meadows. Its place is 
taken in the Navajo Basin by A. lonchocarpus. Not on the Pacific 
slope except in Wyoming. 
Astragalus pectinatus var. pla typhyllus Jones Cont. 10 87 (1902). 
This is a form with leaflets nearly 5 mm, wide after the style of A. 
Grayi but decurrent on the winged rachis toward the tip of the leaf, 
some leaflets jointed to the rachis, Bitter Creek Wyoming, Nelson. 
101. Astragalus Casei Gray Bot. Cal 1 154 (1876). Pods with 
rross section oblong to linear when dry, when fresh oval to reniform 
ar even almost that of the figure 8 laid on its side, about 45 cm. 
long, 6-8 mm. wide, 2-5 mm. high, puberulent, bent into the shape of 
S by the tip being upcurved and the base declined, with sutures nar- 
row externally and prominent, sessile, pendent to horizontal, wider 
below the middle, splittinz the calyx, often shallow-sulcate ventrally 
and usually so dorsally, rugose when dry, weakly attached to calyx. 
Flesh variable but never very thick. Flowers not over 2 cm. Jong, 
nearly sessile, few, at the ends of long peduncles. Banner oblong- 
cvate, deeply notched, 9 mm. long, abruptly arched to 60 degrees a 
little beyond the calyx tips, with sides reflexed most in the middle to 
about 90 degrees to blade and 4 mm, wide there but not at all at tip. 
Croove U-shaped, 1 mm. wide, 2 mm. deep, very narrow below and 
hreadening into a wide are at tip of banner. White spot fan-shaped, 
filling the groove only, cut by wide and purple streaks, coming within 
3 mm. of tip of banner. Wings oblanceolate, rounded, entire, con- 
cave to keel, both flaring and about 2 mm. apart at tip, purple- 
streaked at base, white above, 2 mm. longer than keel. not over 2 
mm. wide. Keel short, with tip white and purple below, quickly 
rounded to 90 degrees, obtuse, 3 mm. high, base straight. Calyx 
oblong to cylindrical, 3-8 mm. long. 2 mm. wide and high, with up- 
per side arched ‚lower side straight, attached on lower fleshy cor- 
ner, 5-ribbed by nerves running through from tips of calyx teeth, 
scarcelv flattened laterally or but little. Teeth deltoid to subulate- 
triangular, 1-2 mm. long. Fruiting pedicels very stout, shorter than 
the bracts, in flower 1 mm. long. Bracts conspicuous, rigid, often 4 
"m. long. Peduncles and rachis 1.5-2 dm. long, loosely flowered on 
the upper third. Leaflets 2-7 pairs, obtuse. Lower pairs of leaflets 
cf middle leaves about 2.5 em, long, not over 4 mm. wide, uppermost 
often verv much reduced. mostly 5-9 mm. long, narrowly oblong to 
línear oblong rigid, distant, usually folded, pubescent on both sides 
obtuse, petiolulete, jointed to rachis. Rachis of leaf elongated, fili- 
form. 3-10 cm. long. Lower leaves short. Stems 1-2 ft high, widely 
branched and spreading, very zigzag, pubescence ashy with minute 
appressed and muricate hairs. Stipules rigid, green, deltoid, reflexed 
3.5 mm. long. Rather common in the sagebrush from Pyramid Lake 
to Death Valley along the eastern side of the Sierras in rather bare 
spots, eastward to Candelaria, Tonapah and also in the Panamint Mts. 
Lower Temperate life zone. It has the appearance somewhat of A. 
Laynee and is easily mistaken for it when t he pods have become sul- 
cate dorsally in the drying. It blooms in the early summer. 
102. Astragalus pterocarpus Watson Bot. King. 71 t 12 (1871). 
Pods completely obcompressed, winged on the sides only, ovate to el- 
liptical, rather wider below the middle, S-shaped, equally acute at 
each end, not acuminate, 1 cm. wide, 4 cm. long and 2-3 mm. thick, - 
in the dry pods the cross nerves raised and branched along the mar- 
gin, tip acute and laterally compressed, cross section linear, very - 
| weakly attached to and splitting the calyx, opening at base and apex  — 
. equally at both sutures and along the ventral suture later, when  — 
A 
