Part 6, 1929] FABACEAE: GALEGEAE 317 



stipules deltoid or lance-deltoid, S-S mm. long, connate two thirds to three fourths their 

 length, membranous, canescent; petioles 1 cm. long or less; leaflets oblong or elliptic, 5-15 cm. 

 long, silvery-strigose on both sides; peduncles 5-7 cm. long; racemes at first short, in age 

 elongate, 3-8 cm. long; bracts lance-linear, 5 mm. long; calyx silky-strigose, the tube 3 mm. long, 

 the teeth subulate, 3 mm. long; corolla ochroleucous, 8 mm. long, similar to that of the preceding 

 species; pod laterally compiessed above the middle, depressed and somewhat sulcate at the 

 base, strongly arcuate, 12-15 mm. long, 4—5 mm. wide, strigose. 



Type collected at Mokiak Pass, Arizona, in 1877, Palmer 108 (Gray Herb.). 

 Distribution: Arizona, southern Utah, and New Mexico. 



6. Batidophaca Sonorae (A. Gray) Rydberg. 



Astragalus Sonorae A. Gray. PI. Wright. 2: 44. 1853. 



Tragacantha Sonorae Kuntze, Rev. Gen. 948. 1891. 



Astragalus humistratus Sonorae M. E. Jones, Contr. W. Bot. 10: 58. 1902. 



A perennial; stems slender, 3-5 dm. long, rather simple, terete, strigose-eanescent ; leaves 

 4—8 cm. long, ascending; stipules lanceolate to deltoid, 4-8 mm- long, membranous; petioles 

 5-15 mm. long; leaflets lance-linear, 0.5-2 cm. long, 1-2 mm. wide, silky-canescent, strigose on 

 both sides, acute; peduncles 4-10 cm. long; racemes 3-6 cm. long; bracts lanceolate, 3-5 mm. 

 long; calyx silky-canescent, the tube 3 mm. long, the teeth subulate, 3 mm. long; corolla purple, 

 about 1 cm. long; banner striately veined, retuse, obovate, strongly arcuate; wings slightly 

 shortei, the blade obliquely oblong, falcate; keel-petals lunate, stiongly arched at the middle 

 attenuate with a blunt tip; pod about 1 cm. long, 4—5 mm. wide, arcuate, somewhat laterally 

 compressed, acute on both sutures, finely strigose. 



Type locality: Mountain Valleys between San Pedro and the Sonoita, Sonora. 



Distribution: New Mexico, Arizona, and Sonora. 



Illustration: M. E. Jones, Contr. W. Bot. 10: pi. I; Rev. Astrag. pi. 6. 



7. Batidophaca albula (Wooton & Standley) Rydberg. 



Astragalus albulus Wooton & Standley. Contr. U. S. Nat. Herb. 16: 136. 1913. 



A perennial, from a woody root; stems several, 4-6 dm. high, much branched, canescent, 

 with ascending hairs; leaves 5-8 cm. long, ascending; stipules whitish, deltoid, connate, 5-7 

 mm. long; leaflets 17-21, linear or oblong, 1-1.5 cm. long, acute at both ends oi obtuse at the 

 apex, white-strigose beneath, glabiate above; peduncles 2-5 cm. long; racemes about 1 dm. 

 long, lax; bracts ovate, membranous, 3 mm. long; pedicels very short; calyx silky with mixed 

 black and white hairs, the tube about 7 mm. long, the teeth 2 mm. long, subulate; corolla 

 ochroleucous, about 12 mm. long; banner obovate, slightly arched; wings nearly as long, the 

 blade oblong-oblanceolate, with a large reflexed auricle; keel-petals slightly shorter, the blades 

 obliquely oblanceolate, abruptly arched neai the rounded apex, with a large reflexed auricle; 

 pod on a reflexed pedicel, glabrous, thin-walled, lanceolate in side view, 12 mm. long, 5 mm. 

 thick, and 3 mm. wide, the upper suture acute, the lower sulcate. 



Type locality". South of Gallup, New Mexico. 

 Distribution: New Mexico. 



8. Batidophaca accumbens (Sheldon) Rydberg. 



Astragalus procumbens S. Wats. Proc. Am. Acad. 20: 361. 1885. Not. .4. procumbens Mill. 1768. 

 Astragalus accumbens Sheldon, Minn. Bot. Stud. 1: 20. 1894. 



A perennial, with a deep taproot and branched caudex, almost acaulescent; stems very 

 short, 1-6 cm. long, strigose-eanescent; leaves ascending, 2-4 cm. long; stipules broadly ovate, 

 acute, 5 mm. long, strigose; leaflets 1 1-15, obovate or elliptic, rounded or obtuse at the apex, 

 5-7 mm. long, silvery-strigose; peduncles 4-10 cm. long, strigose-eanescent; raceme short, 

 5-8-floweied, 1-2 cm. long; bracts lanceolate, about 2 mm. long; calyx strigose-eanescent, the 

 tube 3-3.5 mm. long, white-hairy, the teeth about 1 mm. long; coiolla white, 6-8 mm. long; 

 banner broadly obovate, strongly and abruptly arcuate; wings about as long, the blades falcate; 

 keel-petals fully as long, the blade bioadly lunate, with a small basal auricle; pod spreading, 



