338 NORTH AMERICAN FLORA [Volume 24 



4. Cusickianae. Tall rush-like perennials with narrowly linear leaflets. Calyx-lobes 

 lanceolate but short. Corolla white, three times as long as the calyx. Pod stipitate, the stipe 

 shorter than the calj x-lobes, the body papery, inflated, broadly ellipsoid, glabrous; cross-section 

 oval. 



12. Phaca Cusickii (A. Gray) Rydb. Bull. Torrey Club 40: 47. 

 1913. 



Astragalus Cusickii A. Gray, Proc. Am. Acad. 13: 370. 1878. 



Perennial, with a cespitose woody caudex; stems several, 3-4 dm. high, glabrous, angled 

 and striate, leaves 5-10 cm. long, strongly ascending; stipules triangular, 2 mm. long and 

 fully as broad; leaflets 11-17, nairowly linear, 6-20 mm. long, 0.5-1.5 mm. wide, sttigulose on 

 both sides; peduncles 5-10 cm. long, glabrous; bracts ovate or lanceolate, 1 mm. long; calyx- 

 tube campanulate, 4 mm. long, sparingly stiigulose with black hairs, the lobes triangular, less 

 than 1 mm. long; corolla ochroleucous, 12-15 cm. long; banner with an ovate obtuse blade 

 and broad claw, slightly arched; wings shorter, the blade oblong, falcate, with a large rounded 

 auricle; keel-petals much shorter, the blade broadly lunate; pod glabrous, the stipe about 3 mm. 

 long, the body ellipsoid, 3-3.5 cm. long, 1-1.5 cm. wide; seeds obliquely reniform, 4 mm. long, 

 3 mm. broad, light-brown, smooth. 



Type locality: Union County, Oregon. 



Distribution: Eastern Oregon and Washington and western Idaho. 



Illustration: M. E. Jones, Rev. Astrag. pi. 17, f. 66. 



5. Megacarpae. Low cespitose perennials, mostly glabrous, with conspicuous stipules 

 and broad leaflets. Calyx-lobes subulate. Corolla white, straw-colored, or purplish, large. 

 Pod papery, much inflated, large, with a very short stipe not exceeding the calyx; cross-section 

 oval or round. 



13. Phaca WetherUli (M. E. Jones) Rydb. Bull. Torrey Club 32: 

 665. 1906. 



Astragalus WetherUli M. E. Jones, Zoe 4: 34. 1893. 



Perennial; stems several, ascending, 3-5 dm. high, glabious below, sparingly pubescent 

 above; leaves 5-10 cm. long; stipules small, lanceolate, 5 mm. long; leaflets 9-17, rounded- 

 obovate to oval, obtuse or retuse, 5-10 mm. long, 3-5 mm. wide, glabrous or slightly strigose 

 beneath when young; peduncles 3-5 cm. long; racemes short, subcapitate, 6-8-flowered; 

 bracts ovate; calyx strigose with mixed black and white hairs, the tube 3 mm. long, the lobes 

 subulate, 2 mm. long; corolla 8 mm. long, white with the tip of the bannei pink; banner broadly 

 obovate, rounded; wings shorter than the banner, longer than the keel; keel abruptly incurved; 

 legume short-stipitate, stiigulose, the body nearly 2 cm. long, 1 cm. wide, obliquely ovoid, 

 straight on the upper suture, strigulose. 



Type locality - : Grand Junction, Colorado. 

 Distribution: Known only from the type locality. 

 Illustration: M. E. Jones, Rev. Astrag. pi. 17, f. 64. 



14. Phaca oophora (S. Wats.) Rydberg. 



Astragalus oophorus S. Wats. Bot. King's Expl. 73. 1871. 

 Tragacanlha oophora Kuntze, Rev. Gen. 947. 1891. 



Perennial, somewhat cespitose; stems 3-5 dm. high, glabrous, striate, decumbent at the 

 base; leaves 5-10 cm. long; stipules deltoid, distinct, acuminate, about 5 mm. long; leaflets 

 9-17, oblong-elliptic, 15-20 mm. long, 4-7 mm. wide, minutely mucronate, glabrous; peduncles 

 about 5 cm. long; racemes short, 6- 1 0-flowered ; calyx-tube campanulate, 5 mm. long, glabrous, 

 the lobes subulate, 4 mm. long; corolla ochroleucous, 15 mm. long; banner obovate, gradually 

 tapering below; wings somewhat shorter, the blade oblong-lunate, about equaling the claw, 

 with a rounded basal auricle; keel-petals similar but broadei and rounded at the apex; pod 

 glabrous, the stipe 5 mm. long, the body ellipsoid, 4-5 cm. long, 2-2.5 cm. wide, mottled (?). 



ypE locality: Reese River Pass of the Shoshone Mountains, Nevada. 



istribution: Eastern Nevada. 



lustration: M. E. Jones, Rev. Astrag. pi. 21, f. 76. 



