PEA FAMILY 579 



long, white-villous, the teeth subulate, scarcely 2 mm. long ; corolla purple, about 12 mm. long ; 

 pod ovoid, about 7 mm. long, densely white-woolly. 



Gravelly flats, Arid Transition Zones; eastern Oregon, Crook County, to the San Bernardino Mountains, 

 California. Type locality: Bear Valley, San Bernardino Mountains, altitude, 6,000 feet. June-Aug. 



38. Astragalus coccineus (Parry) Brandg. Crimson Woolly-pod or Sheep-pod. 



Fig. 2812. 



Astragalus Purshii var. coccineus Parry, W. Amer. Sci. 7: 10. 1890. 

 Astragalus coccineus Brandg. Zoe 2: 72. 1890. 

 Xylophacos coccineus Heller, Muhlenbergia 2: 217. 1906. 



Perennial, cespitose, the stems less than 5 cm. long, whole plant densely white-woolly. Leaves 

 6-10 cm. long; leaflets 9-15, elliptic to obovate, obtuse or rounded, 6-12 mm. long; peduncles 

 usually a little shorter than the leaves ; racemes subcapitate, mostly 3-6-flowered ; calyx-tube 

 15 mm. long, 4 mm. wide, the teeth subulate, 3-4 mm. long, white-villous ; corolla bright crimson, 

 25 mm. long, the keel nearly straight, the standard reflexed; pods oblong, about 35 mm. long, 

 10 mm. wide, slightly curved, densely villous. 



Sandy or stony ground, Upper Sonoran Zone; Desert Ranges, from Inyo County, California, to northern 

 Lower California. Type locality: eastern slope of the mountains bordering the Colorado Desert, San Diego 

 County. April-May. 



39. Astragalus cinerascens (Rydb.) Tidestrom. Winged Locoweed. Fig. 2813. 



Pterophacos cinerascens Rydb. N. Amer. Fl. 24: 309. 1929. 



Astragalus cinerascens Tidestrom, Proc. Biol. Soc. Wash. 50: 21. 1937. 



Stems from a cespitose woody caudex, 1-2 dm. high, slender, branched, strigose-canescent. 



Leaves spreading; leaflets 7-11, linear, 5-8 mm. long, acute, stiff, strigose-canescent; peduncles 



2-6 cm. long ; racemes 2-4 cm. long, few-flowered ; calyx-tube 4 mm. long, black-hairy ; teeth 



deltoid, 1 mm. long; corolla purplish, 12-14 mm. long; pod strongly falcate, 15-20 mm. long, 



6 mm. wide, prominently 4-winged, shiny beneath the sparse strigose pubescence. 



Dry sandy hillsides, Upper Sonoran Zone; eastern Oregon. Type locality: dry sandy bluffs southwest of 

 Narrows, Harney County, Oregon. May-July. 



40. Astragalus oxyphysus A. Gray. Diablo Locoweed. Fig. 2814. 



Astragalus oxyphysus A. Gray, Proc. Amer. Acad. 6: 218. 1864. 

 Phaca oxyphysa Heller, Muhlenbergia 2: 86. 1905. 



Perennial, densely soft silky-pubescent, the stems branching from the woody base, erect or 



ascending, about 5-6 dm. high. Leaflets 4-10 pairs, narrowly elliptic to oblong, 1-2 cm. long; 



racemes 6-15_cm. long; calyx-tube tubular, 6 mm. long, the teeth subulate, about 2 mm. long; 



corolla greenish white, 15 mm. long; pods about 25 mm. long, clavate-obovoid, tapering at base 



to the stipe ; stipe becoming recurved, about 5 mm. long. 



Dry hillsides and plains, Upper Sonoran Zone; Inner Coast Range and San Joaquin Valley, California. Type 

 locality: Mount Diablo Range, Arroyo del Puerto. April-May. 



41. Astragalus asymmetricus Sheldon. San Joaquin Locoweed. Fig. 2815. 



Astragalus leucophyllus Torr. & Gray, Fl. N. Amer. 1: 336. 1838. Not Willd. 1800. 



Phaca leucophylla Hook. & Am. Bot. Beechey 333. 1840. 



Astragalus asymmetricus Sheldon, Minn. Bot. Studies 1 : 23. 1894. 



Astragalus leucopsis var. asymmetricus M. E. Jones, Contr. West. Bot. No. 10: 62. 1902. 



Perennial, hoary with a dense silky pubescence, or in age nearly canescent, the stems several, 

 flexuous from a somewhat woody base, 5-10 dm. high. Stipules triangular-subulate; leaflets 

 14-18 pairs, linear-oblong, 15-20 mm. long; raceme 5-8 cm. long; calyx-tube broadly tubular, 

 5-6 mm. long, the teeth subulate, 2 mm. long ; corolla white tinged with green and yellow ; pod 

 much inflated, thin and bladdery, 3-4 cm. long, about 2 cm. wide and nearly as thick, obtuse at 

 apex, abruptly contracted at base ; stipe 2-4 cm. long, recurved, pubescent. 



Dry hillsides and plains, Upper and Lower Sonoran Zones; Lower Sacramento Valley and San Joaquin 

 Valley to Monterey and San Luis Obispo Counties, California. Type locality: originally collected by Douglas, 

 presumably on his journey from Monterey to Santa Barbara. April-July. 



42. Astragalus leucopsis Torr. & Gray. Southern California Locoweed. 



Fig. 2816. 



Phaca canescens Nutt. in Torr. & Gray, Fl. N. Amer. 1 : 344. 1838. Not Astragalus canescens DC. 1802. 

 Phaca leucopsis Torr. & Gray, Fl. N. Amer. 1: 694. 1840. 

 Astragalus leucopsis Torr. Bot. Mex. Bound. 56. pi. 16. 1859. 

 Tragacemtha leucopsis Kuntze, Rev. Gen. PI. 946. 1891. 

 Phaca encenadae Rydb. N. Amer. Fl. 24: 336. 1929. 



Perennial, tomentulose-canescent throughout, the stems branching from the somewhat woody 

 base, 3-5 dm. high. Leaflets 10-15 pairs, oval or oblong, obtuse, 1 cm. long or more; racemes 

 dense, 4-6 cm. long; calyx-tube narrowly campanulate, 4 mm. long, hyaline, the teeth subulate, 

 2-3 mm. long ; corolla greenish white, 12 mm. long ; pod thin, bladdery, strigose, half-oval, 2-3 

 cm. long, abruptly narrowed to a stipe, mostly 8-12 mm. long. 



Hillsides and plains, Upper and Lower Sonoran Zones; Santa Barbara, California, to northern Lower Cali- 

 fornia. Type locality: dry plains, Santa Barbara, California. March-June. A form (Phaca encenadae Rydb.) 

 found in northern Lower California and occasionally in San Diego County, California, has glabrous pods. 



