Part 7, 1929] FABACEAE: GALEGEAE 435 



falcate; keel-petals shorter, the blade broadly lunate, strongly arched; pod about S mm. long, 

 2 mm. wide, lanceolate in outline, rather strongly falcate, glabrous, deeply cordate in cross- 

 section. 



Type locality: Indian Valley, Lake County, California. 



Distribution: Northern California. 



Illustrations: M. E. Jones, Rev. Astrag. pi. 71, f. 264; Jepson, Man. Fl. PI. Calif./. 566. 



52. Hamosa Hookeriana (D. Dietr.) Rydberg. 



Astragalus ervoides H. & A. Bot. Beech. Voy. 417. 1841. Not A. ervoides Turcz. 1838. 

 Astragalus Hookerianus D. Dietr. Syn. PI. 4: 1086. 1850. 

 Tragacantha ervoides Kuntze. Rev. Gen. 944. 1891. 

 Astragalus aperlus Sheldon, Minn. Bot. Stud. 1: 166. 1894. 

 Astragalus tepicus Sheldon, Minn. Bot. Stud. 1: 172. 1894. 



A perennial; stem 3-5 dm. long, puberulent, slender, apparently decumbent below; 

 leaves spreading, 4-6 cm. long; stipules lanceolate; leaflets 15-19, remote, linear-oblong, 

 obtuse, 6-12 mm. long, 2-3 mm. wide; peduncles 4-8 cm. long, slender; racemes 10-12-flowered, 

 about 4 cm. long; bracts subulate, minute; calyx with scattered black hairs, the tube 2 mm. 

 long, the teeth subulate, 1 mm. long or less, black-hairy; corolla ochroleucous; pod reflexed, 

 lance-linear, slightly falcate, tapering at each end, glabrous, nearly 2 cm. long, 3 mm. wide. 



Type locality: San Bias to Tepic. 

 Distribution: Known only from the type locality. 



53. Hamosa hypoleuca (Schauer) Rydb. Bull. Torrey Club 

 54: 334. 1927. 



Astragalus hypoleucus Schauer. Linnaea 20: 747. 1847. 

 Tragacantha hypoleuca Kuntze, Rev. Gen. 945. 1891. 

 Astragalus luisanus M. E. Jones, Rev. Astrag. 275. 1923. 



A cespitose perennial; stems several from a woody root and caudex, 1-1.5, rarely 2 dm. 

 high, silvery-canescent ; leaves 4-7 cm. long, ascending, the rachis silvery; stipules lance- 

 deltoid, 3 mm. long; leaflets 15-21, oblong or oblanceolate, acutish at each end, 5-12 mm. 

 long, 1-2 mm. wide, silvery-canescent; peduncles 5-8 cm. long; racemes elongate, 3-5 cm. long, 

 many-flowered; bracts lance-subulate, membranous, 2-3 mm. long; pedicels 0.5 mm. long; 

 calyx more or less black-hairy, the tube 2.5 mm. long, the teeth subulate, 1 mm. long; corolla 

 ochroleucous; banner obovate, moderately arched; wings nearly as long, the blade obovate; 

 keel-petals much shorter, the blade semi-orbicular, purple-tipped; pod oblong-lanceolate in 

 outline, falcate, about 1 cm. long, 3 mm. wide and thick, obtuse at the base, tapering at the 

 apex, canescent with kinky hairs, the cross-section broadly cordate. 



Type locality: Mexico, the exact locality not indicated. 



Distribution: Coahuila to Hidalgo and Puebla. 



Illustrations: M. E. Jones, Rev. Astrag. pi. 69, f. 247; pi. 70, f. 260. 



54. Hamosa Esperanzae (M. E. Jones) Rydb. Bull. Torrey Club 

 54:335. 1927. 



Astragalus Esperanzae M. E. Jones, Rev. Astrag. 277. 1923. 

 Astragalus chapalanus M. E. Jones, Rev. Astrag. 277. 1923. 



A peiennial, with cespitose root-stock; stems several, decumbent, 1-2 dm. high, terete, 

 strigose, branched; leaves spreading, 3-6 cm. long, the rachis strigose; stipules lanceolate to 

 ovate, 3-4 mm. long; leaflets 15-25, oblong or oblanceolate, 5-12 mm. long, 1-2 mm. wide, 

 acute at the base, obtuse, truncate, or retuse at the apex, glabrous above, strigose beneath; 

 peduncles 3-7 cm. long, strict; racemes short and dense, 2-3 cm. long; bracts lanceolate, 

 membranous, 2-3 mm. long; pedicels about 1 mm. long; calyx black-hairy, the tube 2.5 mm. 

 long, the teeth lanceolate, 2 mm. long; corolla white or greenish-white, tinged with purple; 

 banner 7-8 mm. long, obovate, strongly arched ; wings nearly as long, the blade broadly obliquely 

 obovate, with a large rounded auricle; keel-petals shorter, the blade broadly lunate, almost 



