Inflati 101 



cence. This plant seems to hybridize with A. lentiginosus with which 

 if often grows forming the lentiginosus var. Coulteri. Blooming in 

 late spring, probably a winter annual at times. Tropical in sandy 

 deserts. Common on the Calfornia deserts west of Yuma to Mexico 

 and as far west as Indio. 



38. Astragalus Geyeri Cxray Proc. Am. Acad. 6 214 (1864). Phaca 

 annua Geyer. Pods half-oval, half-ovate, or very broadly lunate, very 

 oblique or arcuate and with tip often erect, from smooth to puberulent, 

 sharply acute with a broad triangular to deltoid, incurved and flat 

 rather oblique tip, decidedly laterally flattened, except in the middle, 

 finely reticulated, rarely sulcate dorsally and then not deeply so, nar- 

 rowed at both ends and abruptly so at base, greatly bellied below, the 

 ventral suture even concave and the dorsal arched to about a half- 

 circle, cross section triangular to deltoid and with rounded base. 

 Flowers 3-5, about 7 mm. long, whitish. Banner arched to nearly erect 

 at end of tube, about oval, 1-3 mm. longer than the wings, little notched 

 with the sides reflexed somewhat, faintly purple-veined, white spot 

 scarcely visible and coming within 1 mm. of the edge all around, 

 groove shallow, scarcely narrower below. Wings 1-2 mm. longer than 

 keel, obliquely ovate, obtuse, ascending about 30 degrees, 1-2 -^iro. wide. 

 Keel about 2 mm. longer than calyx, with tip incurved to 100 degrees 

 and deltoid, about 2 mm. high. Calyx campanulate, 1-2 mm. long, teeth 

 triangular to subulate, green and fully as long as tube. Leaves 7-10 cm. 

 long, all rather long-petioled, many. Peduncles filiform, 1-2 cm. long, 

 axillary almost from the cotyledons. Leaflets linear to elliptical linear, 

 7-11 pairs, obtuse to notched, 1-3 cm. long, mostly folded, nearly 

 smooth above, cuneate at base, rather distant. Plants ashy throughout 

 with fine appressed hairs, but stems the most pubescent. Ann.ials 

 with very slender erect roots and several stems from the crown, 

 freely branching, flexuous, with very many internodes rarely 2 cm. 

 long, blooming almost from the cotyledons throughout the season n'-'d 

 at length becoming small bushy tufts often a foot high with horizontal 

 side branches. Rarely blooms as a winter annual. Common thro tg'i- 

 out the Green River and Navajo Basins and throughout the Great Basin 

 to the Sierras and northward to the southern side of the Columbia 

 Basin, growing in sand on plr.ins. Lower Temperate life zone. At the 

 south it is replaced by sabulonum and aridus. 



39. Astragalus Julianus Jones Cont. 7. 667 (189.5). Pods obliquely 

 oval about 12 mm. long, 7 mm. high from a little inflated to circular in 

 cross section in the middle, beak acuminate, 4 mm. long and nearly 

 central, ventral suture thick and not sulcate. Flowers nearly white 

 but purnle-tipped, in a close raceme which is lax in fruit, nearly ses- 

 sile, reflexed, about 7 mm. long. Calyx campanulate, tube 2 mm. long, 

 teeth subulate and as long as tube. Peduncles stout, as long as leaves, 

 floral rachis as long as the peduncles. Leaves 1 dm. long proper petiole 

 1.2-2 cm. long. Leaflets 7-8 pairs, normally elliptical, acutish, 1.2 cm 

 long, 2-3 mm. wide. Inflorescence corymbiform by the shortening of the 

 upper internodes, i^lants mostly shaggy with partly snreading silky 

 hairs except the shortly and sparsely pubescent pods. Stems erect or 

 decumbent, about 1-2 ft. high. Internodes 13 cm. long. San Julio 

 Lower California Brandegee. 



40. Astragalus proriferus Jones. Cont. .5 275 (1893). Pods spi- 

 cate, obliquely ovate to oval, 1-2 cm. long 7-10 mm. wide, chartaceous. 

 inflated, rounded at base, early splitting the calyx, dorsal suture not 

 evident, very convex, ventral little arched and much thickened in 

 the middle, cross section broadly obovate, tip very flat and short, 

 triangular, beak 4 mm. long. Fl-^w^rs dark-purple, with lighter keel, spi- 

 cate, 1 cm. long. Banner rath or large, nearly round, ascending 80 

 degrees abruptly beyond the cpiyx t'ps, 2 mm. longer than the wings 

 and keel, emarginate. Wings lanceolate, notched; keel 7 mm. long, 

 tip abruptly erect or more incurved, acute, base a little arched. Calyx 



