Inflati 103 



minutely pubescent throughout with appressed hairs, blooming in 

 March and April on the deserts of New Mexico and Arizona south of 

 the Mogollons. Lower Temperate life zone probably. 



44. Astragalus Palmeri Gray Proc. Am. Acad. 7 398 (1868). Pods 

 deltoid-acute, obtuse at base, smooth. Flowers purple, many in ra 

 cemes, about 5 mm. long, arched. Banner arched abruptly at end of 

 tube to erect, about 3 mm long, oval, 1-2 mm. longer than wings, with 

 sides reflexed a little. Wings oblanceolate, rounded, arched somewhat, 

 about 1 mm. longer than keel. Keel with tip abruptly erect and 2 

 mm. high, obtuse. Calyx tube campanulate, about 2 mm. long, with 

 teeth as long. Pedicels very short and as long as the triangular bracts. 

 Peduncles erect, stout, about 1 dm. long, longer than the leaves, 

 with racemes 1-1.5 dm. long. Upper leaves nearly sessile. Leaflets 

 8-13 pairs, oblong, 1.2-2 cm. long, obtuse, long-petioled. Stipules very 

 small and short. Stems 1-2 ft. high, striate and rather stout. Plants 

 ashy to nearly smooth. Growing on gravelly benches. Camp Grant 

 southern Arizona. Palmer. Probable, Lower Temperate life zone. 



45. Astragalus pychnostachyus Gray Proc. Am. Acad. 6 257 (1864). 

 Pods oval ovate, chartaceous, rigid, and with thick rib-like sutures, 

 about 7-10 mm. long, 5 mm. high and 2-3 mm. wide or wider, normally 

 much laterally flattened and with cross section diamond-shaped, but 

 sometimes nearly round, swelled only in the middle, rather coarsely 

 reticulated, closely reflexed in a dense spike or oblong head, nearly 

 smooth, pungently and stoutly and shortly acuminate-beaked, the 

 beak upturned and with the style nearly as long as pod, both sutures 

 very convex, with about 3 ovules. Petals about equal, much as in A. 

 Canadensis. Flowers 7-10 mm. long, cream-colored, closely reflexed. 

 Banner arched a little remote from calyx, about 4 mm. long, nearly 

 "-ound and with fleshy base, with sides reflexed in a narrow line. Wings 

 oblanceolate, a trifle arched. Keel rather exserted, the lower side curved 

 into a half circle or a little more, find the very broadly deltoid tip 

 rather sharp, about 2-3 mm. high, dark. Calyx tube about 4 mm. long, 

 cylindric-campanulate. truncate below, a little oblique at tip, abTit 

 equally inserted, the deltoid teeth minute, felted white-woolly. Pedicels 

 bnrely 1 mm. long, stout, much shorter than the hyaline and elongated 

 subulate bracts. Flowering ped mcles shorter thn the leaves, in fruit 

 often 1 dm. long, stout and strict, axillary. Leaves rarely 1 dm. long, 

 arcuate. Leaflets thick, mucronate 10-20 pairs, oblong to narrowly el- 

 liptical, obtuse to notched, shortly-petiolulate, 1.5-2 cm. long. Stipules del 

 fold with a very broad base, adnate about 5 mm. long, scarious. Stems 

 perennial, stout, strict, little branched, coarse, often woody, 4 ft high. 

 Pubescence white-silky-woolly throughout except the pods. Blooming 

 in the fall, growing in salt marshes near the coast from near San 

 Francisco California southward. 



46. Astragalus Hornii. Gray Proc. Am. Acad. 7 398 (1868). Pods 

 ovate-acuminate from an abruptly rounded base, a little oblique, gra- 

 dually acuminate to the tip from base, 1.5-2 cm. long, fully 1 cm. wide, 

 the cross section about round, conspicuously inflated, iiapery and very 

 thin, villous-pubescent when young, several seeded, densely set in an 

 oblong head. Flowers 5-10 mm. long, about straight, narrow, nearly 

 white, capitate, ascending as are the pods. Banner when fully developed 

 narrowly elliptical, fully 4-8 mm. long, usually gently arched to 

 30 degrees beyond cnlyx, with sides reflexed 1 mm. wide around the 

 margin and most below. Wings nearly linear, gently arched, about 

 I mm. wide, acute or acutish, about 1 mm. longer than keel (or less), 

 from fully 3 mm. shorter thnn banner to nearly as long. Keel with 

 long claw abruptly rounded an'i t'p a little incurved beyond, erect and 

 about 3 mm. high, deltoid. Cnl-\ t ibe campanulate, about ?> mm. long 

 villous, neither oblique nor gibbous nor truncate. Teeth triangular, 

 about 2 mm. long. Pedicels stout. Bracts lanceolate and hyaline, 

 about 2-3 ram. long. Peduncles in flower shorter than the leaves, in 



