Part 6, 1929] FABACEAE: GALEGEAE 351 



lobes subulate, nearly as long; corolla pink, purplish, or white, 7-S mm. long; petals as in the 

 preceding species; pod sessile, 2-2.5 cm. long, 1-1.5 cm. broad, strigulose; seeds brown, as in 

 the preceding. 



Type locality: Las Cruces, New Mexico. 



Distribution: Western Texas to Arizona and northern Mexico. 



Illustrations: M. E. Jones, Rev. Astrag. pi. 10, f. 48; pi. 11 (var. ptayanus). 



54. Phaca Tracyi Rydberg, sp. nov. 



Annual, with a deep root; stems several, strigose, decumbent or ascending, branched, 

 1 dm. high or less; leaves 5 dm. long or less; lower stipules connate and scarious, the upper 

 distinct, deltoid, acuminate, 4-5 mm. long; leaflets 1 1-15, oblong, hirsute-strigose on both sides, 

 6-10 mm. long, 2-3 mm. wide; peduncles less than 2 cm. long; racemes few-flowered, short; 

 calyx strigose, the tube 2 mm. long, the lobes subulate, 2 mm. long; corolla apparently white, 

 5-6 mm. long, similar to that of P. Wootoni; legumes sessile, strigose ovoid, 1-1.5 cm. long, 

 12-14 mm. wide; seeds like those of P. Wootoni. 



Type collected on Tovah Creek, western Texas, April 21, 1902. Tracv b° Earle 78 (herb. N. Y. 

 Bot. Gard.). 



Distribution: Western Texas and Chihuahua. 



55. Phaca Pondii ((keene) Rydberg. 



Astragalus Pondii Greene. Pittonia 1: 288. 1889. 



Astragalus insularis quentinus M. E. Jones, Contr. W. Bot. 8: 6. 1898. 



Astragalus insularis Pondii M. E. Jones, Rev. Astrag. 104. 1923. 



Annual or probably sometimes perennial; stems several, decumbent at the base, branched 

 1-3 dm. long, sparingly strigose; leaves ascending, 4—1 1 cm. long; stipules distinct, deltoid, about 

 3 mm. long, acuminate; rachis strigose; leaflets 9-21, linear or linear-oblong, 5-20 mm. long, 

 1-4 mm. wide, strigose beneath, glabrate above, acute at each end; peduncles 2-3 cm. long, 

 strigose; racemes 5-10-flowered, 2-3 cm. long; calyx strigose, the tube 2 mm. long, the teeth 

 subulate, fully 2 mm. long; corolla purple, 5-6 mm. long; petals as in P. Wootoni; legume 

 strigulose, sessile, 2-2.5 cm. long, 1.5 cm. wide, straw-colored, obliquely ellipsoid, more convex 

 on the lower than on the upper suture; seeds obliquely reniform. 



Type locality: San Barlotome Bay (that of var. quentinus, San Quentin), Lower California. 

 Distribution: Lower California. 

 Illustration: M. E. Jones, Rev. Astrag. pi. 10. 



56. Phaca subcinerea (A. Gray) Rydb. Bull. Torrey Club 

 40:47. 1913. 



Astragalus subcinereus A. Gray, Proc. Am. Acad. 13: 366. 1878. 



Apparently peiennial; stems decumbent at the base, cinereous often with curved hairs, 

 2-4 dm. high; leaves ascending, 5-8 cm. long; stipules free, broadly deltoid, about 2 mm. long; 

 leaflets 9-21, oblong, 5-10 mm. long, 1-3 mm. wide, short-villous, obtuse to retuse; peduncles 

 2-3 cm. long; racemes rather dense, 7-10-flowered; calyx canescent, the tube about 4 mm. long, 

 the lobes deltoid, about 1 mm. long; corolla about 8 mm. long, according to the original 

 publication "greenish with a purple tip, the banner violet-striate"; legume sessile, villosulous, 

 spotted with purple, 1.5-2 cm. long, 8-15 mm. wide; seeds brown, obliquely round-reniform, 

 2.5 mm. broad. 



Type locality: Mokia Pass, northwestern Arizona. 



Distribution: Arizona and southern Utah. 



Illustrations: M. E. Jones, Rev. Astrag. pi. 11, f. 49; pi. 17, f. 49. 



57. Phaca Silerana (M. E. Jones) Rydb. Bull. Torrey Club 

 40:47. 1913. 



Astragalus Sileranus M. E. Jones, Zoe 2: 242. 1891. 



Astragalus Sileranus cariacus M. E. Jones, Proc. Calif. Acad. II. 7: 642. 1895. 



Perennial; stems several, decumbent, about 5 dm. high, slender, short-villous; leaves 5-10 

 cm. long, ascending, the rachis short-villous; stipules deltoid, 5 mm. long, nearly distinct; 



