]_56 LEGUMINOS^E. Astragalus. 



with purple: pod canescent-puberulent, chartaceous, hardly over 2 lines long, ovate- 

 oblong, obtuse, turgid, broadly and deeply sulcate down the back, the cross section 

 obcordate : ovides and seeds not exceeding 8. — Proc. Am. Acad. viii. 626. 



Sierra Valley, Leinmon and Bolander, June, 1872 : received only from the latter, and apparently 

 not since met with. 



45. A. lentiformis, Gray. Villous-pubescent, and more or less hoary : stems 

 ascending, soon diffuse, a span to a foot long: leaflets 11 to 15, from obovate to 

 oblong-spatulate, retuse or emarginate (3 to 5 lines long) : peduncles short, a 

 quarter to half an inch long, seldom equalling the rather dense several - many- 

 flowered raceme : calyx-teeth rather shorter and the (apparently yellowish-white) 

 corolla larger than in the preceding : pods broadly oblong, canescently pubescent 

 (3 lines long, almost 2 lines broad), lenticular, not at all sulcate on the back, both 

 sutures marginal, but a partition from the dorsal one completely dividing the 6-8- 

 seeded cell into two. 



Sierra Nevada, in Clover Valley, &c, on the borders of California and N. ~W. Nevada, Lerainon. 



+- +- Acaulescent-depressed, on cespitose rootstocks : leaflets few. 



46. A. calycosus, Torr. Silvery-canescent with close-pressed silky pubescence, 

 barely 2 or 3 inches high in matted tufts : leaflets 5 to 11, or in some leaves only 3 

 and seemingly digitate, from oblong to ovate or obovate (1 to 4 lines long), thick- 

 ish : scape-like peduncles somewhat exceeding the leaves, 2 - 6-flowered : calyx- 

 teeth lanceolate or subulate, shorter than the oblong-campanulate tube : corolla half 

 an inch long, yellowish-white, with purple tip to the rounded keel : pod oval-oblong, 

 very obtuse, puberulent, 3 or 4 lines long, turgid, chartaceous, slightly sulcate 

 dorsally, 2-celled, about 10-seeded, barely twice the length of the calyx. — Watson, 

 Bot. King Exp. 66. 



Eastern ranges of the Sierra Nevada, at 8,000 to 11,000 feet, near the borders of California 

 (Torrcy), and in the Clover and Humboldt Mountains, Nevada, Watson. 



-.; * * Pod sessile in and shorter than the calyx, turgid : flowers capitate. 



47. A. Av.stin.a3, Gray. A span high, in dense tufts, silvery silky-pubescent : 

 stipules scarious and mostly united into one ovate body opposite the leaf : leaflets 

 9 to 17, oblong or oval-lanceolate, acute or mucronate, 4 or 5 lines long: peduncle 

 (an inch or two long) mostly longer than the leaf, bearing 10 or 12 sessile flowers 

 in a close head : bracts nearly filiform, persistent, nearly equalling the calyx, both 

 white-villous ; the filiform teeth of the latter rather longer than the campanulate 

 tube, and nearly equalling the (pale or whitish) corolla, of which the standard and 

 wings are externally villous-pubescent : pod turgid-oval, chartaceous, hoary-pubes- 

 cent, imperfectly 2-celled, few-seeded, only 2 lines long, not equalling the calyx- 

 teeth and the marcescent corolla, the transverse section almost circular. 



Summit of Mount Stanford (Castle Peak), Nevada Co., at 9,000 feet, Lemmon. In foliage 

 somewhat resembling A. Andersonii, but more dwarf and condensed, and with capitate flowers 

 (only 3 or 4 lines long) ; most of all related to A. Spaldingii of Idaho and Oregon : dedicated to 

 Mrs. R. M. Austin of Butterfly Valley, who has much helped on our knowledge of the botany 

 of this portion of the Sierra Nevada, and made interesting observations upon the Pitcher-Plant 

 of the region. 



III. Perennial : persistent leaflets and stipules spiny-tipped. (Kentrophyta, Nutt.) 



48. A. Kentrophyta, Gray. Hoary with very minute silky pubescence, cespi- 

 tose, rigid : stems much branched, mostly prostrate, somewhat woody at base : lower 

 stipules membranaceous or scarious, the upper rigid and pungent : leaves crowded 

 on the branchlets : leaflets 5 to 7, acerose-subulate, divaricate : peduncles very 

 short, 1 - 3-flowered : calyx-teeth subulate-setaceous : corolla whitish or tinged with 

 violet, 2 lines long : pod ovate, acuminate, turgid-lenticular, 1-celled, 3— 4-ovuled, 

 1 - 2-seeded, about 3 lines long. 



