Part 7, 1929] FABACEAE: GALEGEAE 445 



cm. long; calyx velutinous, the tube 5-6 mm. long, 2-3 mm. thick, the teeth subulate, 3-4 m. 

 long ; corolla white or purplish, 15-17 mm. long ; banner obovate, slightly arched ; wings shorter, 

 the blade oblong, with a large basal auricle; keel-petals 11-12 mm. long, the blade lunate, 

 rounded at the apex; pod ovoid (not mature), 12 mm. long, 6 mm. thick and 4 mm. wide, 

 slightly curved, sulcate on the upper suture, densely short-pubescent. 



Type collected near the City of Chihuahua, April 1, 1885, Pringle 189 (herb. N. Y. Bot. Gard.). 

 Distribution: Chihuahua and Durango. 



10. Astragalus Bigelovii A. Gray, PI. Wright. 2: 42. 1853. 



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



Astragalus Bigelovii MacDougalii Gand. Bull. Soc. Bot. Fr. 48: xiv. 1902. 



A cespitose subacaulescent perennial, with a short caudex; stems several, very short, 

 rarely 1 dm. long, densely silky-villous; leaves 1-2 dm. long, the rachis and petioles shaggy- 

 hairy; stipules herbaceous, lanceolate to deltoid, 8-10 mm. long; leaflets 21-31, broadly oval, 

 1-2 cm. long, densely silky-villous with long yellowish hairs; peduncles erect or decumbent, 

 1-3 dm. long; racemes dense, 5-15 cm. long; bracts 4-10 mm. long, lance-subulate; 

 calyx loosely silky-villous, the tube 7-8 mm. long; corolla purple, about 2 cm. long; banner 

 obovate, gradually arcuate; wings shorter, the blade oblong, arcuate, with a large basal auricle; 

 keel-petals similar but broader and more falcate; pods obliquely ovoid, arcuate, 12-15 mm. 

 long, 7—8 mm. thick, and 5 mm. wide, densely villous, slightly sulcate on both sutures. 



Type locality: Organ Mountains, New Mexico. 



Distribution: Texas to Arizona and Durango. 



Illustrations: M. E. Jones, Rev. Astrag. pi. 58, f. 188; Clements, Rocky Mt. Fl. pi. 29, f. 27. 



11. Astragalus Thompsonae S. Wats. Proc. Am. Acad. 

 10:345. 1875. 



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



Astragalus syrticotus Sheldon, Minn. Bot. Stud. 1: 22. 1894. 



Astragalus Bigelovii Thompsonae M. E. Jones, Contr. W. Bot. 8: 23. 1898. 



A subacaulescent cespitose perennial; stems numerous from the base, very short and 

 covered by the broad stipules; leaves 5-15 cm. long; stipules deltoid, densely white-pubescent, 

 about 5 mm. long; rachis white-villous, with rather short spreading hairs; leaflets 25-35, 

 broadly ovate, 5-10 mm. long, rounded or truncate at the apex, densely white-villous; peduncles 

 5-10 cm. long; bracts lanceolate or lance-subulate, membranous, villous; calyx white-villous, 

 the tube about 1 cm. long, 4 mm. broad, the teeth subulate, 3 mm. long; corolla light-purple, 

 about 2 cm. long; banner obovate, moderately arcuate; wings slightly shorter, the blade 

 oblong, with a very large reflexed auricle; keel-petals about 16 mm. long, the blade broadly 

 lunate, obtuse, with a smaller spreading auricle; pod densely silky-villous with long spreading 

 hairs, about 2 cm. long, 8 mm. thick, and 5 mm. wide, strongly arcuate, deeply sulcate on both 

 sutures, 1 -celled at the apex. 



Type locality: Southern Utah. 



Distribution: Utah, Arizona, and western Colorado. 



Illustration: M. E. Jones, Rev. Astrag. pi. 58. 



12. Astragalus Matthewsii S. Wats. Proc. Am. Acad. 

 18: 192 1883. 



Astragalus Bigelovii Matthewsii M. E. Jones, Rev. Astrag. 231. 1923. 



A subacaulescent cespitose perennial, with a woody root ; stems very short, almost none ; 

 leaves spreading, about 1 cm. long; stipules deltoid, 8-10 mm. long, densely white-silky on both 

 sides; peduncles about 1 cm. long; racemes 4-5 cm. long, rather lax; bracts lanceolate, 5-7 

 mm. long; calyx loosely silky, the tube 6-7 mm. long, 3 mm. broad, the teeth subulate, 3 mm. 

 long; corolla purplish, about 18 mm. long, like that of A. Bigelovii; pod obliquely ovoid, about 

 2 cm. long, 12 mm. thick, and 10 mm. wide, deeply sulcate on the lower suture, densely villous 

 with white hairs. 



Type locality: Fort Wingate, New Mexico. 

 Distribution: Known only from the type locality. 

 Illustration: M. E. Jones, Rev. Astrag. pi. 58. 



