PEA FAMILY 577 



28. Astragalus inflexus Dougl. Grooved Woolly-pod. Fig. 2802. 



Astragalus inflexus Dougl. ex Hook. Fl. Bor. Amer. 1: 151. 1834. 

 Phaca inflexa Piper, Contr. U.S. Nat. Herb. 11: 369. 1906. 

 Xylophacos inflexus Rydb. Bull. Torrey Club 40: 49. 1913. 



Perennial, the stems several, decumbent, 2-4 dm. long, whole plant hoary with a dense long- 

 villous pubescence. Leaflets 15-25 mm. long, elliptic to oblanceolate ; raceme subcapitate, 5-10- 

 flowered ; calyx-tube 10-12 mm. long, the teeth subulate, 6-7 mm. long ; corolla light purple, 20-25 

 mm. long ; pod oblong-ovoid, 20-25 mm. long, curved, deeply sulcate on both sutures, villous. 



Dry plains and hills, especially sandy soil, Upper Sonoran Zone; southeastern Washington and northeastern 

 Oregon to Montana. Type locality: "On the barren sandy grounds of the Columbia from the junction of Lewis 

 and Clark [Snake] River to the [Blue] mountains." May-June. 



29. Astragalus incurvus (Rydb.) Abrams. Curved Woolly-pod. Fig. 2803. 



Xylophacos incurvus Rydb. Bull. Torrey Club 52: 366. 1925. 

 Astragalus Purshii var. longilobus M. E. Jones, Zoe 4: 269, in part. 1893. 

 Astragalus Purshii var. incurvus Jepson, Fl. Calif. 2: 360. 1936. 



Perennial, cespitose, the stems seldom over 5 cm. long, whole plant densely white-villous. 

 Leaflets 11-17, elliptic to oblanceolate, acute, 8-15 mm. long; peduncles 3-5 cm. long; racemes 

 subcapitate, 3-5-flowered ; calyx-tube about 1 cm. long, white-villous, the teeth subulate, 5-7 mm. 

 long ; corolla about 2 cm. long, white or faintly tinged with rose-purple, the keel purple-tipped ; 

 pod densely hairy, 2 cm. long, 1 cm. wide, usually sulcate on both sutures, strongly incurved 

 almost to a half circle. 



Usually in gravelly somewhat alkaline soils, Arid Transition and Upper Sonoran Zones; western Nevada 

 and California east of the Sierra Nevada. Type locality: California. April-June. 



30. Astragalus funereus M. E. Jones. Black Woolly-pod. Fig. 2804. 



Astragalus funereus M. E. Jones, Contr. West. Bot. No. 12: 11. 1908. 

 Xylophacos funereus Rydb. Bull. Torrey Club 52: 367. 1925. 

 Xylophacos Blyae Rose, N. Amer. Fl. 24: 303. 1929. 

 Astragalus Purshii var. funereus Jepson, Fl. Calif. 2: 360. 1936. 



Perennial, cespitose, the stems usually less than 1 dm. long, whole plant densely villous with 

 tangled hairs. Leaflets 13-17, oval to obovate, obtuse at the apex, 5-8 mm. long; peduncles 

 stout ; racemes subcapitate, 3-10-flowered ; calyx-tube 7-8 mm. long, black-hairy, the teeth subu- 

 late, about 3 mm. long; corolla rose-purple, becoming bluish when dry, 15-20 mm. long; pods 

 densely hairy, about 5 cm. long, 1.5 cm. wide, ovoid, somewhat obcompressed at base, slightly 

 curved, hooked at the apex, upper suture slightly sulcate. 



Clay soils, Lower Sonoran Zone: Mojave Desert of southern Nevada, northwestern Arizona, and eastern 

 borders of California. Type locality: Rhyolite, Nevada. March-April. 



31. Astragalus utahensis (Torr.) Torr. & Gray. Utah Woolly-pod or 



Pink Lady-fingers. Fig. 2805. 



Phaca mollissima var. utahensis Torr. in Stansbury's Exp. 385. pi. 2. 1853. 

 Astragalus utahensis Torr. & Gray, Pacif. R. Rep. 2: 120. 1856. 

 Xylophacos utahensis Rydb. Bull. Torrey Club 40: 49. 1913. 

 Xylophacos subvillosus Rydb. Bull. Torrey Club 52: 368. 1925. 



Perennial, cespitose, the stems usually less than 1 dm. long, the whole plant densely white- 

 woolly. Leaflets 9-17, obovate, often broadly so, rounded at the apex, 5-10 mm. long ; peduncles 

 mostly shorter than the leaves; racemes subcapitate, 3-10-flowered; calyx-tube about 12 mm. 

 long, the teeth subulate, about 4 mm. long; corolla 25-30 mm. long, violet-purple; pod ovoid, 

 about 2 cm. long, slightly curved, slightly sulcate on both sutures, densely hirsute-villous. 



Hills and bench-lands, Upper Sonoran and Arid Transition Zones of the Great Basin region; Harney County, 

 eastern Oregon, and northern Sierra Nevada, California, to Montana, Wyoming, and Utah. Type locality: 

 northeast shore of Great Salt Lake and on Stansbury Island. April-May. 



Astragalus nudisiliquus A. Nels. Bot. Gaz. 54: 410. 1912. Closely resembles A. utahensis, but the pod 

 sparingly instead of densely woolly, and the flowers ochroleucous or white instead of rose-purple. Found in 

 Elmore County, Idaho, and Malheur County, Oregon. 



32. Astragalus Purshii Dougl. Pursh's Woolly-pod or Sheep-pod. Fig. 2806. 



Astragalus Purshii Dougl. ex Hook. Fl. Bor. Amer. 1: 152. 1830. 

 Astragalus mollissima Nutt. in Torr. & Gray, Fl. N. Amer. 1 : 350. 1838. 

 Phaca Purshii Piper, Contr. U.S. Nat. Herb. 11 : 369. 1906. 

 Xylophacos Purshii Rydb. Bull. Torrey Club 32: 662. 1906. 



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

 Leaflets 9-13, oblong to oblanceolate, acutish, 8-15 mm. long; calyx-tube 10 mm. long, the teeth 

 subulate, about 3 mm. long; corolla 20-25 mm. long, ochroleucous, the keel tipped with dark 

 purple; pod ovoid, densely villous, 15-20 mm. long, slightly curved and scarcely sulcate. 



Dry hillsides and plains, Upper Sonoran and Arid Transition Zones; British Columbia to South Dakota, 

 south to eastern Washington and Oregon and Nevada. Type locality: "On low hills of the Spokane River," 

 Washington. May-June. 



