176 
arched at calyx tips to nearly 90 degrees; sides reflexed fully 2 mm, 
wide, blade 3 mm. long. Wings oblong, with narrow base, ascending, 
rather aeute, barely as long as keel. Keel 1 mm. shorter than the ban- 
ner, dark-tipped, produced into an acuminate erect tip 2 mm. high which 
is abruptly incurved to 90 degrees, straight and like that of A. campes- 
tris. Calyx a little over 2 mm. long, not arched, nor cleft deeper above, 
short-campanulate, green, narrowed below, densely white-hairy, teeth 
subulate, as long as tube, not unequal. Pedicels slender, 2-5 mm. long, 
much longer than the bracts. Bracts minute but conspicuous, hyaline. 
‘Peduncles about 4 em. long, slender, about 10-flowered, shorter than the 
petioles. Leaves all petioled, 2.5-7 em. long, the lower the smallest, the 
uppermost the largest; petiole shorter than the leaf-rachis. Leaflets 
oblanceolate to oval 2-10' mm. long, folded, petiolulate, 8-14 pairs, very 
obtuse, nearly contiguous, Stipules hyaline, conspicuous, almost con- 
nate below, not adnate, reniform to deltoid, seldom over 2 mm. long, 
often twice as wide as long, very much like those of A. junceus. Stems 
prostrate, many, Slender, weak, woody at base, not over 1.5 dm. long, 
internodes seldom over 1.2 em. long, often very short, knotty. Rather 
woody rooted, green perennial. Pubescence ashy to nearly glabrous, 
very sparse except on young parts. Peninsula of Lower Califarnia. 
Tropical. The plants form close mats on the ground. 
133. Astragalus Mohavensis, Watson Proc. Am. Acad. 20 361 
(1885). Pods narrowly oblong, plum-shaped, about 1.8 em. long, 5-7 
mm. wide, and 3-5 mm. high, with pulpy wall 2 mm. thick when fresh 
and not thick inner walls, which separate from the outer much as in A. 
cymboides, nearly straight, jointed to a minute stipe when dry or 
weakly attached, sessile when green, a little narrowed below, reflexed, 
coriaceous, ashy, rigid or faintly corrugated, opening all along the 
ventral suture, imperfectly 2-celled by the partial intrusion of the .dor- 
sal suture, cross section ellipitical-ovate- when dry and almost round 
when fresh but sometimes cordate, both sutures prominent, raised and 
thin when dry only, tip 1-celled and flat and very shortly triangular 
acute with a rather long mucro which is about in line with the middle of 
the end, cavity triquetrous, hairy and pulpy. Flowers 5-15, about 7-8 
mm. long, not stubby, purple tipped, shortly-racemose, ascending. Ban- 
ner about 5 mm. long, arched to 45-909 at the end of calyx tube, 3 mm. 
longer than the keel, sides reflexed 1-2 mm. wide and most in the mid- 
dle, white spot ovate to oblong or obovate-oblong and purple veined and 
stopping 1 mm. short of the tip. Wings 1 mm. wide, as long as keel, 
ascending, oblanceolate to oblong, rounded, nearly straight, oblique, 
darker above, 4 mm. shorter than banner. Keel 3 mm. wide, purple, 
2 mm. shorter than banner, tip larger, rounded, blunt, erect, arched to 
. M, circle in a short are, base about straight to a little arched, blade 
4 mm. long. Calyx turbinate to campanulate cylindric, not arched nor 
- evidently cleft deeper above, about 3 mm. long, not flattened, fleshy at 
base, nearly equally inserted; sinuses broad; teeth as long as tube, 
equal and subulate. Pedicels not over 2-3 mm. long about as long as the 
bracts in fruit only and stout. Bracts ovate to subulate. Pedicels in 
flower about 1 mm. long. Early peduncles senpose, the later ones axil- 
lary throughout, racemosely fruited above, 7-15 cm. long, slender, a 
trifle longer than leaves when mature including the rachis. Leaves 
5-10 cm. long with the petioles as long as the rachis, or on the lower 
leaves much longer. Leaflets broadly elliptical to obovate, cuneate at 
base, rarely 1.5 em. long, 2-5 pairs, rather distant, apiculate to trun- 
cate ‚the central ones the largest. Stipules deltoid, adnate, hairy. 
rather stiff, small. Stems flexu ous, not over a foot high, much branched, ` 
_ widely spreading, often forming masses a yard in diameter. Inter- 
|. nodes His over 5 em. long. Pubescence silvery even to the 
a t than the leaves. The plants bloom as winter annuals an 
continue for. a few. ya. ME X common m mer. coon. and on — 
slender, and dense very echinate hairs, the stems more __ 
