Part 5, 1929] FABACEAE: GALEGEAE 259 



Pod spirally curved, the body forming one and a half to two circles; 

 leaflets linear or oblong. 

 Corolla more than 1 cm. long; pod 4-4.5 mm. broad, strongly- 

 reticulate. 60. H. speirocarpu^. 

 Corolla 5-6 mm. long; pod 3-3.5 mm. broad. 61. H. alvordensis. 

 Pod with thick coriaceous sutures; leaflets linear. 



Stipe of the pod nearly as long as the flat body. 62. H. podocarpus. 



Stipe of the pod about half as long as the more turgid body. 63. H. bicristatus. 



1. Simplicifolii. Low acaulescent, densely cespitose-pulvinate perennials, with short 

 woody eaudices. Leaves mostly simple, or unifoliolate, sometimes 3-5-foliolate, tufted at 

 the ends of the short branches, linear to narrowly spatulate, mostly sericeous. Stipules scari- 

 ous, more or less imbricate. Peduncles rather short, 1-few-flowered; bracts subulate or 

 linear. Calyx short; tube campanulate, the lobes subulate. Corolla purplish or ochroleucous. 

 Banner obovate or oblanceolate, with a short broad claw. Wings and keel-petals shorter, with 

 slender claws equaling the blades, and with small basal auricles, the keel petals with a rounded 

 apex. Pod oblong or oblong-ovate, not strongly compressed, sessile, few-seeded. 



1. Homalobus detritalis (M. E. Jones) Rydb. Fl. Rocky Mts. 

 511,1063. 1917. 



Astragalus detritalis M. E. Jones, Contr. W. Bot. 13: 9. 1910. 



A subacaulescent perennial, with a wooded matted short-branched caudex; leaves 

 clustered, 5-S cm. long; stipules ovate or lanceolate, scarious, 5-S mm. long; leaflets 1-5, artic- 

 ulate to the rachis, usually narrowly oblanceolate, 1-2 cm. long, silky-canescent, pointed; 

 peduncles 2-4 cm. long; raceme 3-6-flowered, short, subcapitate; bracts lanceolate, scarious, 

 with green midrib and tip, about S mm. long; calyx campanulate, the tube 4 mm. long and 

 nearly 3 mm. broad, the teeth subulate, fully 3 mm. broad; corolla purplish; banner obovate, 

 notched, gently arched, with reflexed sides; wings a little shorter, the blades oblong- falcate, 

 with a narrow reflexed auricle, obtuse at the apex, longer than the claw; keel-petals much 

 shorter, the blade lunate, longer than the claw, rounded at the apex; pod narrowly linear, fal- 

 cate, 2-3 cm. long, 2 mm. wide, mottled, white-strigose. 



Type locality: Theodore, Utah. 



Distribution: Known only from the type locality. 



Illustration: M. E. Jones, Rev. Astrag. pi. 5,f. 15. 



2. Homalobus caespitosus Nutt.; T. & G. Fl. N. Am. 



1:352. 1838. 



Homalobus canescens Nutt.; T. & G. Fl. N. Am. 1: 352. 1838. Not A. canescens DC. 1802. 



Astragalus caespitosus A. Gray, Proc. Am. Acad. 6: 230. 1864. Not A. caespitosus Pallas. 1800. 



Tragacanlha caespilosa Kuntze, Rev. Gen. 943. 1891. 



Astragalus spalulatus Sheldon. Minn. Bot. Stud. 1: 22. 1894. 



Astragalus simplicifolius caespitosus M. E. Jones, Proc. Calif. Acad. II. 5: 647. 1895. 



Astragalus simplicifolius spalulatus M. E. Jones, Contr. W. Bot. 10: 65. 1902. 



An acaulescent perennial, with a cespitose, densely tufted caudex; leaves clustered on the 

 ends of the caudex, unifoliolate or rarely 3-5-foliolate, silky-canescent, 2-4 cm. long; stipules 

 scarious, pubescent, lanceolate or ovate; leaf-blades or leaflets linear-oblanceolate, acute, 1-3 

 mm. w-ide; peduncles 2-6 cm. long, 3-7-flowered; bracts subulate or lanceolate, scarcely half 

 as long as the flowers; calyx silky-canescent, the tube campanulate, 2 mm. long, the teeth sub- 

 ulate, nearly as long; corolla bluish-purple; banner 8-9 mm. long, obovate, with a broad daw, 

 reflexed, retuse at the apex; wings about as long, the blade obliquely oblanceolate, rounded at 

 the apex, with an acute basal auricle, the claw two thirds as long; keel-petals much shorter than 

 the wings, the blade nearly semicircular, rounded at the apex, the claw nearly as long; pod ob- 

 long, gradually acute, 8-12 mm. long, 2.5-3 mm. broad, strigose, sessile; seeds obliquely ob- 

 long, 2 mm. long, nearly 1.5 mm. broad, with the funicle near the broader end. 



Type locality: Dry hills of the Platte towards the Rocky Mountains [Nebraska or Wyo- 

 mingj. 



Distribution: Hills and bad-lands, Saskatchewan and North Dakota to northeastern Utah 

 and northern Colorado. 



Illustrations: M. E. Jones, Contr. W. Bot. 10: pi. 1; Rev. Astrag. pi. 5; Fl. Neb. 21: pi. 11, 

 f. 98-103; Britt. & Brown, 111. Fl. /. 2153; ed. 2./. 2557. 



