PEA FAMILY 515 



2.5-3 cm. long, about 5 mm. wide. A. Episcopus S. Wats. A. Coltoni M. E. 

 Jones. Hills: Utah. Son. 



39. H. collinus (Dougl.) Rydb. Stems erect, cinereous-pilose; leaflets 

 15-23, linear or linear-oblong, obtuse or retuse, 7-15 mm. long, villous-hirsutu- 

 lous beneath, glabrate above; raceme 5-10 cm. long; calyx villous; tube about 

 8 mm. long; lower teeth lance-subulate, the upper triangular, all about 2 mm. 

 long; corolla ochroleucous, about 15 mm. long; pod densely pilose; stipe about 

 1 cm. long; body linear, straight, about 2 cm. long, tapering at both ends. A. 

 collinus Dougl. Mountain sides: B.C. Ida. Ore. Son. My-Je. 



40. H. curvicarpus (Sheld.) Heller. Stem 3-6 dm. high, cinereous-pil. 

 with crisp hairs, branched and often flexuose; leaflets 9-17, obovate or obovate- 

 cuneate, truncate to emarginate at the apex, 8-15 mm. long, more or less pubes- 

 cent on both sides, with crisp hairs; calyx densely pilose; tube 7-8 mm. long; 

 teeth triangular, 1-1.5 mm. long; pod finely pubescent; stipe 10-12 mm. long; 

 body curved, 3 cm. long, 4 mm. wide, tapering at both ends. A. speirocari>ux 

 falciforrnis A. Gray. Sandy or dry soil: Ida. Nev. Calif. Wash. Son. My-Jl. 



41. H. Hallii (A. Gray) Rydb. Stems adsurgent, 2-4 dm. high, strigose, 

 leafy; leaflets 19-25, linear-oblong to elliptic-cuneate, truncate or retuse, 5-10 

 mm. long, strigose beneath, glabrous above; raceme dense; calyx strigose; tube 

 4-5 mm. long; teeth triangular-subulate, 1 mm. long; corolla purple, 12-15 mm. 

 long; pod 2-2.5 cm. long, oblong-elliptic, tapering at both ends, short-stipitate, 

 glabrous, 5 mm. thick. A. Hallii A. Gray. Mountains: Colo. Submont. 

 Mont. Jl-Au. 



42. H. Fendleri (A. Gray) Rydb. Stems adsurgent, 3-5 dm. high, glabrous 

 or nearly so; leaflets 13-25, oblong or linear-oblong, obtuse or retuse, 8-20 mm. 

 long, sparingly strigose beneath, glabrous above; calyx strigose, with dark hairs; 

 tube 3 mm. long, lanceolate or triangular, 1 mm. long; corolla 10-12 mm. long, 

 purple; pod oblong-obovoid, about 2 cm. long, 7-8 mm. in diameter, strigillose 

 or glabrate. Phaca Fendleri A. Gray. A. Fendleri A. Gray. River bottoms 

 in the mountains: N.M. Colo. Submont. My-Je. 



43. H. flexuosus (Dougl.) Rydb. Stems erect to decumbent, usually flexu- 

 ose, strigose, 3-6 dm. long; leaflets 13-21, linear-oblong to elliptic-cuneate, obtuse 

 or retuse, glabrous above, strigose beneath, 5-15 mm. long; racemes lax; calyx 

 strigose; tube 3 mm. long; teeth subulate, 1 mm. long; corolla purple, or white 

 tinged with purple; pod cylindric, 1.5-2 cm. long, 4mm. thick, strigose, acute at 

 both ends, straight or slightly curved. Phaca elongata Hook. A. flexuosus 

 Dougl. Dry plains: Sask. Minn. Kans. N.M. Utah Alta. Plain Mont. 

 My-Jl. 



44. H. proximus Rydb. Stems erect, 2-3 dm. high, grayish strigose; leaf- 

 lets 5-11, linear or linear-oblong, obtuse, 5-11 mm. long, grayish strigose; calyx 

 about 2.5 mm. long, strigose; corolla 4-5 mm. long, white or ochroleucous; pod 

 oblong-linear, terete, glabrous, about 12 mm. long and 3 mm. in diameter. Dry 

 places: Colo. Submont. Je. 



45. H. Salidae Rydb. Stem 3 dm. or more long; leaflets 15-21, oblong- 

 oblanceolate to narrowly linear, 8-15 mm. long, strigose; racemes lax; calyx 

 strigose and slightly black-hairy, about 3 mm. long; teeth short, triangular; 

 corolla about 8 mm. long, purple-veined; pod narrowly linear-oblanceolate, 

 terete or nearly so, 2-2.5 cm. long, 2 mm. in diameter, finely strigose, very acute 

 at the apex. Dry places: Colo. Submont. Au. 



46. H. macrocarpus (A. Gray) Rydb. Stems 4-8 dm. high, strigose- 

 canescent; leaves 5-10 cm. long, the upper often reduced to filiform phyllodes; 

 leaflets 0-5, linear to filiform, strigose-canescent, 1-3 cm. long; raceme lax, : 



1 1 A ^V 1 _ . J. _ LA A rt 



IJ-LJ-V^C*! , UClr^V^A iJ.ii > tVU*~'\-'V.i~. A XT 1 OJ "\T A T 



Gray. (?) A. duchesnensis M. E. Jones. A. macer A. A els. 

 Colo. Utah. My-Je. 



