PEA FAMILY 603 



117. Astragalus albens Greene. White Rattle-weed. Fig. 2891. 



Astragalus albens Greene, Bull. Calif. Acad. 1: 156. 1885. 

 Hatnosa albens Rydb. Bull. Torrey Club 54: 22. 1927. 



Perennial, whole plant silver with appressed silky pubescence, the stems numerous, spreading, 

 ascending, 2-4 dm. long. Leaves 9-11, elliptic-obovate, 7-10 mm. long, acutish or obtuse; pe- 

 duncles 2.5-5 cm. long; racemes short, about 1-2 cm. long, rather densely flowered; calyx-tube 

 scarcely 3 mm. long, white-silky ; teeth subulate, about as long as the tube ; corolla purple, 8 mm. 

 long; pods broadly linear, narrowed at base to a short stipe, strongly curved, 15-20 mm. long, 

 3-4 mm. wide, coriaceous, strongly reticulate, strigose, ribbed along the ventral suture, broadly 

 sulcate dorsally except toward the apex. 



Rocky canyons, Lower Sonoran Zone; Mojave and Colorado Deserts, California, to southern Nevada. Type 

 locality: Mojave Desert. April-May. 



118. Astragalus Clevelandii Greene. Cleveland's Rattle-weed. Fig. 2892. 



Astragalus Clevelandii Greene, Bull. Torrey Club 9: 121. 1882. 

 Hamosa Clevelandii Rydb. Bull. Torrey Club 54: 334. 1927. 



Perennials from a woody root, the stems slender, erect or ascending, 3-6 dm. high, glabrous. 

 Leaves 4-10 cm. long, leaflets 11-19, narrowly elliptic, obtuse or acutish, 5-10 mm. long, green 

 and glabrous above, sparsely strigose beneath; peduncles erect, 5-15 cm. long; racemes often 

 10—15 cm. long in fruit, many-flowered ; calyx-tube broadly campanulate, scarcely 2 mm. long, 

 white-hairy ; teeth subulate, equaling the tube ; corolla white, 5 mm. long ; pods reflexed, lanceo- 

 late, 5-7 mm. long, 2 mm. wide near the base and gradually narrowed to the acuminate apex, 

 strongly sulcate dorsally, glabrous. 



Gravelly or rocky soils, Upper Sonoran Zone; Inner Coast Ranges, Lake County, California. Type locality: 

 Indian Valley, Lake County. June-July. 



119. Astragalus Bruceae (M. E. Jones) Abrams. Bruce's Rattle-weed. Fig. 2893. 



Astragalus tener var. Bruceae M. E. Jones, Rev. N. Amer. Astrag. 268. 1923. 



Annual, branching from the base, the branches 5-10 cm. long, sparsely strigose. Leaflets 

 mostly 7-9, cuneate or oblong, retuse, 4-6 mm. long, strigose beneath, sparsely so or glabrate 

 above; peduncles very slender, 2.5-3.5 cm. long; flowers short-racemose, 1-6; calyx-tube cam- 

 panulate, about 2.5 mm. long, black-hairy; teeth subulate, 1 mm. long; corolla purple, 7 mm. 

 long ; pod linear-oblong, falcate, barely 2 cm. long, 4 mm. wide, acute at apex, distinctly flattened 

 laterally, shallowly and narrowly sulcate dorsally, glabrous and mottled. 



Heavy clay soils, Upper Sonoran Zone; Sacramento Valley and adjoining foothills, Butte and Tehama 

 Counties, California. Type locality: plains of Butte County, California. March- April. 



120. Astragalus tener A. Gray. Slender Rattle-weed. Fig. 2894. 



Astragalus hypoglottis var. strigosa Kell. Proc. Calif. Acad. 2: 115. 1861. 



Astragalus tener A. Gray, Proc. Amer. Acad. 6: 206. 1864. 



Astragalus strigosus Sheldon, Minn. Bot. Studies 9 : 24. 1894. 



Astragalus Titi Eastw. Bull. Torrey Club 32: 195. 1905. 



Astragalus tener var. rattanoides M. E. Jones, Rev. N. Amer. Astrag. 268. 1923. 



Hamosa Kelloggiana Rydb. Bull. Torrey Club 54: 323. 1927. 



Slender annual, branching from the base, the stems glabrous or sparingly strigose. Leaflets 

 mostly 9-13, linear and acute to narrowly oblong and truncate or retuse, 5-12 mm. long, green, 

 very sparingly strigose or glabrate, peduncles 3-7 cm. long ; flowers 2 to many, subcapitate ; 

 calyx-tube 2 mm. long, black-hairy ; teeth about 1 . 5 mm. long ; corolla purple, 7-9 mm. long ; 

 pod 10-15 mm. long, 2 mm. wide, straight or nearly so, not attenuate at base, acute or short- 

 acuminate at apex, narrowly sulcate dorsally, strigose or rarely glabrous. 



Low ground, usually in saline soils near the coast, Upper Sonoran Zone; San Francisco Bay region south to 

 Los Angeles. Type locality: California. Collected by Douglas probably in the vicinity of San Francisco or 

 Monterey. March— May. 



121. Astragalus Clarianus Jepson. Clara Hunt's Rattle-weed. Fig. 2895. 



Astragalus Clarianus Jepson, Man. Fl. PI. Calif. 578. 1925. 

 Astragalus Rattanii var. Clarianus Jepson, Fl. Calif. 2: 379. 1936. 



Annual, branching from the base, the branches 6-20 cm. long, sparsely strigose. Leaflets 7-11, 

 oblong-cuneate, truncate or retuse, 6-10 mm. long, sparsely strigose below, glabrate above; pe- 

 duncles 2.5-5 cm. long; flowers 4—10, subcapitate; calyx-tube campanulate, 2 mm. long, black- 

 hairy ; teeth subulate, 1 mm. long ; corolla pale lavender or white tipped with dark purple, 7-8 

 mm. long; pod strongly arcuate, narrowly linear, 2.5-3 cm. long, 1.5-2 mm. wide, acuminate at 

 apex, attenuate to a stipe-like base, strigose. 



Clay soils, Upper Sonoran Zone; northern Coast Ranges and Sacramento Valley, California. Type locality: 

 near St. Helena, California. April-June. 



122. Astragalus Rattanii A. Gray. Rattan's Rattle-weed. Fig. 2896. 



Astragalus Rattanii A. Gray, Proc. Amer. Acad. 19: 75. 1883. 



Annual, branching from the base, the stems 10-35 cm. high, sparsely strigose. Leaflets 9-15, 

 cuneate-obovate to oblong, obtuse or retuse, 5-10 mm. long, sparingly strigose or glabrate ^pe- 

 duncles 5-7 cm. long; flowers subcapitate, 3 to many; calyx-tube 2.5 mm. long, black-hairy; 



