Part 7, 1929] FABACEAE: GALEGEAE 419 



Calyx white-hairy; pod 10-12 mm. long. 



Corolla 7-8 mm. long. 49. H . Harhvegii. 



Corolla 4—5 mm. long. 50. H. vaccarum. 



Pod glabrous. 



Corolla pink-purple. 54. H. Esperanzae. 



Corolla white. 



Raceme very many-flowered, 1 dm. long or more; pod about 



8 mm. long. 51. H . Clevelandi. 



Racemes 10- 12 -flowered, lax, 4—5 cm. long; pod nearly 2 cm. 



long. 52. H. Hookeriana. 



Plant 1-2 dm. high, decumbent at the base. 



Plant silvery-canescent; raceme elongate. 53. H. hypoleuca. 



Plant merely strigose, the leaves glabrate above; raceme short. 

 Corolla less than 1 cm. long; pod lance-oblong. 



Pod glabrous; corolla 8 mm. long, pink-purple. 54. H. Esperanzae. 



Pod strigose. 



Leaflets linear. , 



Calyx white-hairy, the teeth shorter than the tube. 55. H. parva. 



Calyx black-hairy, the teeth fully equaling the tube. 56. H. asperula. 



Leaflets obovate. 57. H. hypoxyla. 



Corolla more than 1 cm. long, white; plant densely cespitose, 



prostrate; pod broadly oblong. 58. H. Pringlei. 



8. Wrightianai: 

 One species. 59. H. Wrighlii. 



1. Succumbentes. Rather low stout perennials; stem and leaves pilose; racemes short 

 and dense; flowers large, fully 2 cm. long; calyx cylindro-campanulate, with short teeth; pod 

 glabrous, broad, linear-oblong, only slightly falcate, deeply sulcate on the lower suture. 



1. Hamosa succumbens (Dougl.) Rydb. Bull. Torrey Club 

 54; 14. 1927. 



Astragalus succumbens Dougl.; Hook. Fl. gor. Am. 1: 151. 1831. 

 Astragalus dorychnioides Dougl.; G. Don, Gen. Hist. 2: 258. 1833. 

 Tragacanlha succumbens Kuntze, Rev. Gen. 948. 1891. 

 Phaca succumbens Piper, Contr. U. S. Nat. Herb. II: 370. 1906. 



A perennial, branched below; stems rather stout, flexuose, 2-4 dm. long, hirsute with 

 spreading or retrorse hairs, decumbent or ascending; leaves spreading, 5-10 cm. long; stipules 

 lanceolate to ovate-lanceolate, 1 cm. long; leaflets 13-17, obovate to elliptic, 1-2 cm. long, 

 5-8 mm. wide, obtuse, hirsute on both sides; peduncles stout, spreading, 3-5 cm. long; racemes 

 dense, head-like; bracts linear-subulate, falcate, about 1 cm. long, pubescent; calyx hirsute, 

 the tube about S mm. long, 3 mm. wide, the teeth subulate, 3-4 mm. long; corolla white or 

 tinged with rose, about 2 cm. long; banner oblong-obovate, retuse; wings fully as long, the 

 blade oblong, with a rounded basal auricle; keel-petals much shorter, the blade broadly lunate, 

 nearly semicircular, with a large basal auricle; pod oblong, slightly arcuate, glabrous, 3-4 

 cm. long, 5-6 mm. wide and 3 mm. thick, deeply sulcate on the lower suture, abruptly acum- 

 inate, inversely Y-shaped in cross-section. 



Type locality: Barren grounds of the Columbia, Washington. 

 Distribution: Columbia Valley of Washington and Oregon. 

 Illustrations: M. E. Jones, Rev. Astrag. pi. 57; pi. 58, f. 187. 



2. Malacae. Cespitose stout perennials; stem leafy, as well as the leaves villous or silky 

 with long hairs; racemes elongate; flowers middle-sized, about 1.5 cm. long; calyx deeply 

 campanulate; pod broad, oblong or linear, somewhat compressed, sulcate on the lower suture, 

 narrowly cordate in cross-section. 



2. Hamosa malaca (A. Gray) Rydb. Fl. Rocky Mts. 496, 

 1063. 1917. 



Astragalus malacus A. Gray, Proc. Am. Acad. 7: 336. 1868. 

 Tragacanlha malaca Kuntze, Rev. Gen. 946. 1891. 

 Astragalus obfalcatus A. Nelson, Bot. Gaz. 54: 411. 1912. 

 Astragalus malacus obfalcatus M. E. Jones, Rev. Astrag. 227. 1923. 



A cespitose perennial; stems stout, decumbent at the base, 1-3 dm. high, hirsute; leaves 

 5-20 cm. long, ascending or spreading; stipules thin, deltoid, acuminate, 1-1.5 mm. long, 



