176 



nrched at calyx tips to nearly 00 do^Toes ; sides refloxed fully 2 nun. 

 Hide, Made 3 mm. lonK. Wings oblong, with narrow base, ascendinK. 

 rather acute, barely as long as keel. Keel 1 mm. shorter than the ban- 

 niT, dark-tipped, produced into an acuminate erect tip 2 nun. 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 abovf\ 

 short-canipniiulate, green, narrowed l)elow, densely white-hairy, teeth 

 subulate, ns long as lube, not unequal. Pedicels slender, 2-5 mm. long, 

 much longer than the bracts. Bracts minute but conspicuous, hyaline. 

 Peduncles about 4 cm. long, slender, about 10-flowered, .shorter than the 

 petioles. Lenves all pelioled, 2.5-7 cm. long, the lower the smallest, the 

 uppermost th(> largest; pet'ole sliorl:t>r tlian the leaf-i-acliis. LojiHets 

 oblanceolate to oval 2 10 mm. lonur, folded, petiolulate, 8-14 pairs, very 

 obtuse, nearly <'ontigiious. Stipul(>s liyaline, conspicuous, almost con- 

 nate below, not adnate, reniform to deltoid, seldom ov<m- 2 mm. long, 

 often twice as wide as long, very much like those of A. juaceus. Stems 

 prostrate, many, slender, weak, woody at base, not over 1.5 dm. long, 

 Internodes seldom over 1.2 cm. long, often very short, knotty. Rather 

 woody rooted, green perennial. Pubescence ashy to nearly glabrous, 

 very sjiai-se t>xccpr on young iiarts. Peninsula of Lower California. 

 Tropical. The plants form close mats on the ground. 



133. Astragalus Mohavensis, Watson Proc. Am. Acad. 20 .301 



(1885). Pods narrowly oblong, plum-shaped, about 1.8 cm. long, 5-7 

 rum. 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 sdpe -"hen dry ^or 

 weakly attached, sessile when green, a little narrowed below, reflexed, 

 coriaceous, ashy, rigid or faintly cornigated. opening all along the 

 ventral suture. Imperfectly 2-cellcd 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 promin'-nt, niised and 

 thin when dry only, tip l-celled and Hat and very shortly triangular 

 acute with a rather long mucro which is about in line with tiie 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 45-90° at the end of calyx tube, 3 nmi. 

 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 puri^le 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, i)urple, 

 2 mm. shorter than banner, tip larger, rounded, blunt, erect, arched to 

 V4, circle in a short arc. base about straight to a little arched, blade 

 4 mm. long. Calyx turbinate to campanulate cylindric. not arched nor 

 evidently cleft deei)er 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 Ions,' as the 

 bracts In fruit only and stout. Bracts ovate to subulate. Pedicels in 

 flower about 1 mm. long. Early peduncles scapose, 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 ])etioles as bvng as tlie rachis, or on the lower 

 leaves much longer. Leaflets broadly elliptical to obovate, cimeate at 

 base, rarely 1.5 cm. long, 2-5 pairs, rather distant, aplculate to trun- 

 cate ,the central ones the largest. Stipules deltoid, adnate, hairy, 

 rather stiff, small. Steins flexuous. not over a foot liigli, much branched, 

 widely spretidlag, often forming masses a .vard in diameter. Inter- 

 nodes rarely over 5 .mp.. long, rubesccnce silvery even to the 

 stipules, with slender, and dense very .chlnate hairs, the stems more 

 pubescent than the leaves. The plants- bloom as winter annuals and 

 continue for a few years. Kather onunon in rocky canons and on 



