CONTRIBUTIONS TO WESTERN BOTANY. 653 



fine and soft, rarely the pods are obcompressed when 

 much arcuate so as to be linear in cross-section; this is a 

 common character, however, in pods which are nearly 

 round, or even in pods which are much compressed lateral- 

 ly, they being greatly obcompressed when much arcuate; 

 banner brilliant pink purple or darker, oval-ovate, sides re- 

 flexed I ^" wide at a point opposite the keel tip and narrow- 

 ing to nothing both ways ; sulcus in the banner nearly cylin- 

 drical, i]4" wide, and forming about ^ of a circle, i" 

 deep and very broad and large, gradually shallowing up- 

 wards to the apex of the banner which is deeply notched; 

 the white spot being yi" above the keel and goes far be- 

 low it, filling the sulcus and is M-shaped, purple -veined 

 below and inclined to be stippled above, it reaches within 

 2" of the tip of the banner; wings linear, i" wide, as- 

 cending, a little obtuse, tips horizontal and connivent 

 over the keel, purple throughout, i" longer than the 

 keel; keel straight, bent sharply to 90° and acutish, 

 purple; calyx tube 3" long and about i%" wide, ^" 

 thick. The stems are spreading or prostrate, 2-12' long, 

 and are often much tufted, growing in sandy or gravelly 

 places from 4200° to 4600° altitude, near rocks on grav- 

 elly slopes, and occasionally hanging in festoons from 

 crevices of the rocks. When growing this can only be 

 separated from A . amfhioxys by the pubescence and by 

 the rather diamond- shaped leaflets, though in the dried 

 plants the pod is very different. 



Astragalus arietinus. 



No. 55540. June 30, 1894, Fairview, Utah, in gravel, 

 6500° alt. 



No. 5208a. May 11, 1894, Cedar City, Utah, in 

 gravel, 6000° alt. 



This is the plant referred to by Watson in King's Re- 

 port, p. 71, as a form of his A. iodanthics, but is reason- 



