654 CALIFORNIA ACADEMY OF SCIENCES. 



ably distinct from that species, as an examination of his 

 type shows. It is characterized by the large, hyaline, 

 veiny, lower stipules, which are round to reniform or 

 even obovate, 2-3'' long and nearly as wide, connate be- 

 low; leaflets about 9 pairs; wings very long and straight, 

 with white tips which are horizontal; calyx long; pods 

 fleshy, the pulp often 1%^^ thick, the innermost wall of 

 the pod being almost woody, pods from nearly straight to 

 coiled in a circle, cross -section from nearly round to al- 

 most didymous, according to the sulcation at the two su- 

 tures. The flowers are always purple, and the plants 

 grow in tufts with decumbent stems and are very variable 

 in the pubescence and pods, but seldom approach the 

 type of iodanthus. It is No. 270 of Watson from Utah, 

 and No. 269 from the West Humboldt Mountains, Neva- 

 da. It also occurs at Mammoth Hot Springs, Wyoming, 

 on dry, rocky hills. It is very abundant throughout the 

 Great Basin, but does not seem to occur outside of it, 

 except at the north and northeast. For a fuller descrip- 

 tion of this plant, see Zoe, vol. iii, p. 294, under A. 

 iodanthus. 



Astragalus arietinus var. stipularis. Miss East- 

 wood, along McElmo Creek, S.W. Colorado, June, 1892. 



Proper stems an inch or less long, densely covered 

 with large round to oval hyaline stipules, 2-23^^'' long, 

 rarely broadly ovate and acute; perennial and ceespitose, 

 strigose with very short hairs fixed by the base; leaflets 

 4-6 pairs, elliptical to obovate, obtuse, 4'' long or less, 

 rather thick, proper petiole twice the rachis, slender, 

 leaves 3' long or less; peduncles subscapose, 2-3' long, 

 stout, capitately few flowered; bracts ovate and hyaline, 

 i" long; calyx tube cylindrical, a little oblique, 3'' long, 

 -i-^y^' wide, oblique and a little narrowed below, red- 



