Part 6, 1929] FABACEAE: GALEGEAE 327 



deltoid, 2-3 mm. long, strigose; leaflets 13-21, oblanceolate, oblong or obovate, 4-12 mm. long, 

 2-5 mm. wide, rounded, truncate, or retuse at the apex, cuneate at the base, strigose on both 

 sides, sparingly so or glabrate above, grayish beneath; peduncle 5-10 cm. long; racemes 2-4 

 cm. long; bracts lanceolate, 2 mm. long; calyx strigose, often more or less black-hairy, the tube 

 5 mm. long, 3 mm. wide, the teeth subulate, 1 mm. long; corolla purple, about 15 mm. long; 

 banner obovate; wings nearly as long, the blade oblanceolate, about equaling the claw, with a 

 reflexed auricle; keel-petals shorter and broader, the blade shorter than the claw; pod short- 

 stipitate, obliquely semi-obovate in outline, terete, nearly straight on the upper suture, ventri- 

 cose on the lower, 2-2.5 cm. long, 8 mm. wide, 7-8 mm. thick, broadest above the middle, 

 acute at each end. 



Type locality: Western New Mexico. 



Distribution: New Mexico, Arizona, and southern Colorado. 



Illustration: M. E. Jones, Rev. Astrag. pi. 44. 



13. Pisophaca antonina (S. Wats.) Rydberg. 



Astragalus anloninus S. Wats. Proc. Am. Acad. 17: 343. 1882. 



A cespitose perennial; stems several, branches flexuose, slender, 2-3 dm. high, canescent- 

 strigose; leaves 5-8 cm. long; stipules deltoid, acuminate, 2 mm. long; leaflets 13-19, linear, 

 about 1 cm. long, 1-2 mm. wide, strigose; peduncles 7-10 cm. long, erect; racemes few-flowered, 

 2-3 cm. long; bracts subulate, 2 mm. long, longer than the pedicels; calyx strigose with black 

 hairs, the tube 5 mm. long, the teeth subulate, 1.5 mm. long; corolla light-purple, about 15 mm. 

 long; banner obovate, retuse at the apex; wings nearly as long, the blade broadly oblanceolate, 

 with a large reflexed auiicle; keel-petals 12 mm. long, the blade nearly semi-orbicular, rounded 

 at the apex, shorter than the claw; pod subsessile, ovoid-ellipsoid, 2 cm. long, strigulose, 

 abruptly conti acted at the base, acute at the apex, 7-8 mm. thick, 5 mm. wide. 



Type locality: San Antonio de la Alanganes, Coahuila. 



Distribution: Coahuila. 



Illustration: M. E. Jones, Rev. Astrag. pi. 44, f. 157. 



14. Pisophaca Greenei (A. Gray) Rydberg. 



Astragalus Greenei A. Gray. Proc. Am. Acad. 16: 105. 1880. 

 Astragalus gracilentus Greenei M. E. Jones, Contr. W. Bot. 8: 14. 1S98. 



A cespitose perennial; stems several, decumbent at least at the base, flexuose, branched, 

 grayish-strigose; leaves ascending, 4-7 cm. long, the rachis strigose; stipules deltoid, 2-3 mm. 

 long; leaflets oblong or oblong-oblanceolate, 5-10 mm. long, 2-4 mm. wide, pilose on both 

 sides or glabrate above, rounded oi retuse at the apex; peduncles 5-10 cm. long; raceme i-5 

 cm. long; bracts subulate, 2 mm. long; calyx white-pilose with rather loose hairs, the tube 

 3.5-4 mm. long, the teeth subulate, 1.5-2 mm. long; corolla white, sometimes tinged with 

 purple; banner 10-12 mm. long, obovate; wings nearly as long, the blade broadly oblanceolate, 

 with a reflexed auricle; keel-petals much shorter, the blade broadly lunate; pod obovoid, 

 strigulose, 1.5-2 cm. long, 10-13 mm. wide, 10-11 mm. thick, acutish at each end. 



Type locality: Foothills of Mogollon Mountains. New Mexico. 

 Distribution: New Mexico and northwestern Texas. 

 Illustration: M. E. Jones, Rev. Astrag. pi. 44. 



15. Pisophaca gracilenta (A. Gray) Rydberg. 



Phaca gracilenta A. Gray. Mem. Am. Acad. 4: 36. 1849. 

 Astragalus gracilentus A. Gray, Proc. Am. Acad. 6: 223. 1864. 

 Tragacantha gracilenta Kuntze, Rev. Gen. 943. 1891. 



A perennial, with a cespitose caudex or rootstock; stems several, decumbent, flexuose, 

 3-4 dm. long, canescent-strigose; leaves 4—6 cm. long, spreading; stipules lanceolate, reflexed, 

 3 mm. long; leaflets 15-19, linear-oblong to elliptic, 5-10 mm. long, obtuse or retuse, glabrate 

 above, canescent-strigose beneath; peduncles 4-7 cm. long, ascending; racemes short, 3-5 cm. 

 long, S-20-flowered; bracts lanceolate, 2 mm. long; calyx more or less black-hairy, the tube 

 campanulate, 3-3.5 mm. long, the teeth subulate, 1.5-2 mm. long; corolla pale-purple or white, 



