Rydberg : Astragalus and its segregates 667 



This and the following differ from the typical species of 



Homalobiis 



The 



pods are, however, of the same texture, wholly one-celled and 

 with prominent sutures, and the plants are of the same general 

 ;habit. 



Homalobus Hallii (A. Gray) Rydb. 



Astragahts Hallii A. Gray, Proc. Am. Acad. 6 : 224. 1863. 



Homalobus Fendleri (A. Gray) Rydb. 



Astragalus Fendleri K. Gray, PI. Wright. 2: 44. IS53. 



Homalobus proximus Rydb. sp. nov. ^ 



Cespitose perennial, related to H, flcxnosus \ stems erect, 2-3 

 dm. high, grayish-strigose ; leaves 4-6 cm. long; stipules tri- 

 angular-ovate, glabrous; leaflets 5-1 1, linear or linear-oblong, 

 obtuse, 5-1 1 mm. long, 1-2 mm. wide, grayish-strigose; racemes 

 erect, 5-10 cm, long; 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, glabrous, 

 acute at the apex, abruptly contracted into a short stipe about 

 equaling the calyx. 



Colorado: Arboles, June, 1899, C, F. Baker ^21. 



Homalobus Salidae Rydb. sp. nov. 



Decumbent or ascending perennial ; stem 3 dm. or more long ; 

 leaves 5-7 cm. long ; stipules triangular-ovate, strigose ; leaflets 

 15—21, oblong-oblanceolate to narrowly linear, 8-15 mm. long, 

 0.5-3 mm, wide, strigose ; racemes 10-15 cm. long, lax; pedicels 

 5 mm. long; bracts minute; calyx campanulate, 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 ^^- l^"g» ^ mm. in diameter, finely stri- 

 gose, very acute at the apex and gradually tapering into a short 

 stipe below. 



Colorado: Salida, August 3, 1896, C. L. Shear 3468, 



Homalobus macrocarpus (A. Gray) Rydb. 



niacrocarp 



1849. 



Astragahts lonchocarpiis Torn Pac. R. R. Rep. 4 : 80. 1856. 



This species is doubtfully referred to Homalobus. It may 

 represent a monotypic genus of its own. The relationship is how- 



Ho 



been associated. 



