PEA FAMILY 571 



long ; pod pendulous, sparingly strigose, the body oblong, about 20 mm. long, and 4-5 mm. wide, 

 the stipe 8-10 mm. long. 



Dry hillsides, Arid Transition Zone; eastern Washington to eastern Oregon, Idaho, and Nevada. Type 

 locality: near Fort Okanogan, Washington. May-June. 



9. Astragalus inversus Jones. Susanville Rattle-weed. Fig. 2783. 



Astragalus inversus Jones, Zoe 4: 276. 1893. 



Homalobus inversus Rydb. Bull. Torrey Club 50: 271. 1923. 



Perennial, from an erect fleshy root, the stems decumbent to ascending, slender and lax, 

 6-10 dm. long, with long internodes, green and sulcate. Stipules green, rigid, subulate, reflexed ; 

 leaves about 1 dm. long, the rachis green, scarcely tapering; leaflets 5-11, remote, narrowly 

 linear, the terminal phyllodia-like ; peduncles often 3 dm. long, very slender, falcate; raceme 

 loosely few-flowered; calyx-tube campanulate, about 3 mm. long, reddish, the teeth minute; 

 corolla about 10 mm. long, lavender striped with reddish purple ; pods horizontal or slightly re- 

 flexed, the body 25-40 mm. long, 4-6 mm. wide, nearly flat, reddish, drying purple, straight or 

 slightly arcuate, acute or short-acuminate, narrowed at base to a short stipe, 5—10 mm. long. 



Gravelly soils, Arid Transition Zone; Siskiyou and Modoc Counties, California. Type locality: Susanville, 

 California. May-July. 



Astragalus Applegatei M. E. Peck, Proc. Biol. Soc. Wash. 49: 111. 1936. Stems simple or branched, 

 cespitose or procumbent, glabrous or sparingly strigose, 25-40 cm. long. Leaves 5-8 cm. long; leaflets 9-13, 

 linear or linear-oblong, 1-2 cm. long; racemes 5-7 cm. long; corolla 6-7 mm. long, pale lavender; pod oblong, 

 8-13 mm. long, 3 mm. wide, compressed, strigulose, and purple-spotted, splitting first at the apex; stipe 4-5 mm. 

 long. 



A little known species, originally described from specimens collected at Keno, and near Klamath Falls, 

 Klamath County, Oregon. Resembling most closely A. filipes but the pods split first at the apex as in A. Anti- 

 sellii. 



10. Astragalus Antisellii A. Gray. Antisell's Rattle-weed. Fig. 2784. 



Astragalus Antisellii A. Gray, Antisell's Rattle-weed. Fig. 2784. 

 Astragalus Hasseanus Sheldon, Minn. Bot. Studies 1 : 124. 1894. 

 Homalobus Antisellii Rydb. Bull. Torrey Club 50: 271. 1923. 

 Astragalus trichopodus var. Antisellii Jepson, Man. Fl. PI. Calif. 572. 1925. 



Perennial, the stems erect or ascending, 5-8 dm. high, rather slender, from a woody base, 

 the whole plant more or less sparsely strigose. Stipules subulate, reflexed; leaves 7-15 cm. long; 

 leaflets mostly 21-25, narrowly to broadly oblong, 8-20 mm. long ; peduncles usually much longer 

 than the leaves; raceme elongated, loosely flowered; calyx-tube campanulate, 5 mm. long, the 

 teeth triangular, scarcely 1 mm. long; corolla ochroleucous, 10 mm. long; pod 20-25 mm. long, 

 4-6 mm. wide, flattened laterally or sometimes slightly inflated when ripe, tapering at base to a 

 slender stipe, 7—15 mm. long. 



Dry mesas and hillsides, Upper Sonoran Zone; southern California, San Luis Obispo to Los Angeles. Type 

 locality: Santa Ynez, California. March-June. 



11. Astragalus gaviotus Elmer. Gaviota Rattle-weed. Fig. 2785. 



Astragalus gaviotus Elmer, Bot. Gaz. 39: 54. 1905. 



Homalobus gaviotus Rydb. Bull. Torrey Club 50: 272. 1923. 



Astragalus trichopodus var. gaviotus Jepson, Man. Fl. PI. Calif. 571. 1925. 



Astragalus Antisellii var. gaviotus Munz & McBurney, Bull. S. Calif. Acad. 31: 67. 1932. 



Stems stout, from a cespitose caudex, cinereous-strigose, 3-5 dm. high, branched above. 

 Leaflets 15-31, oblong to elliptic, 10-25 mm. long, obtuse to retuse at the apex, strigose on both 

 surfaces; peduncles about 10 cm. long; racemes dense, 2-3 cm. long; calyx-tube 3 mm. long, 

 strigose with both white and black hairs, the teeth subulate, 1 mm. long; corolla white, 15 mm. 

 long ; pod pendulous or spreading, strigulose, the stipe 6-8 mm, long, the body elliptic 25-30 mm. 

 long, 6-10 mm. wide, acute at each end. 



Rolling hills, Upper Sonoran Zone; Santa Barbara County, California. Type locality: Gaviota, California. 

 April-June. 



12. Astragalus collinus Dougl. Hill Rattle-weed. Fig. 2786. 



Phaca collina Dougl. ex Hook. Fl. Bor. Amer. 1: 141. 1830. 

 Astragalus collinus Dougl. ex G. Don, Gen. Hist. PI. 2: 256. 1832. 

 Astragalus cyrtoides A. Gray, Proc. Amer. Acad. 6: 201. 1864. 

 Tragacantha collina Kuntze, Rev. Gen. PL 943. 1891. 

 Homalobus collinus Rydb. Bull. Torrey Club 40: 53. 1913. 



Perennial, the stems several, erect or ascending, 2-6 dm. high, branching freely, strigose. 

 Leaves 3-5 cm. long ; leaflets linear to narrowly linear, 5-15 mm. long, obtuse or retuse, pilose 

 with upwardly curved hairs; peduncles stout, 10-30 cm. long, flower-bearing on the upper third; 

 flowers recurved ; calyx-tube gibbous at base, broadly cylindric, 7-8 mm. long, the teeth subulate, 

 about 2 mm. long; corolla ochroleucous, 10-12 mm. long, the banner reflexed just beyond the 

 calyx; pod pendulous, linear-oblong, straight or slightly curved upward, 15-20 mm. long, 3 mm. 

 wide, oval in cross-section, upper suture straight, lower curved upward at each end, coriaceous, 

 strigose. 



local 



Open hillsides, Arid Transition and Upper Sonoran Zones; eastern Washington and Oregon to Idaho. Type 

 ity: "On the subalpine ranges of the Blue Mountains in dry soils." May-June. 



