294 Contributions to Western Botany. [zoe 



late, rounded, obtuse, oblique, ascending, concave to keel, nearly 

 horizontal and connivent over the keel, forming an arch over it, 2 

 lines wide and ^ a line longer than keel, purple; keel all purple. 

 One form has banner 5 lines long, short; calyx 3 lines long, and 

 teeth i^^ lines long; pods hoary, and whole plant densely silky. 

 Another f )rm has fleshy pods, less hairy; calyx 4 lines and teeth i 

 line long; keel rounded, }^ narrower than the above; flowers 8 lines 

 long. This plant is instantly recognized by the arched and conni- 

 vent wings and stippled white spot. 



Astragalus Cham^leuce Gray. (Distributed by me as A. 

 glareosus, but not in my sets.) Flowers i inch long, pink purple, 

 few; banner in flower oblong-oval, sides reflexed 45°, plain, dark 

 pink-purple with darker veins, tip with a central notch ^ line deep, 

 and with two shallow ones adjoining, seldom absent; white spot 

 comes within a line of the edge all around and as low as the keel,- 

 narrower beloA', obovate-cordate, edge ragged, with red-purple 

 veins; below and a line apart are two patches of anastomosing red- 

 purple veins; wings narrowly oblong, dark purple at tip, oblique, 

 rounded, tip twisted just below tip of keel, and horizontal; keel 

 narrow 2 lines below tip, blunt and rounded, dark purple at tip; 

 pod very fleshy, cartilaginous, and sparsely short hairy. It always 

 grows in firm, damp meadows, in mountain parks, or high valleys. 

 It blooms in June and July. It is a matted, woody-rooted, pros- 

 trate, densely branched, silvery plant, with short peduncles among 

 the leaves. 



Astragalus iodanthus Watson. This is the most variable 

 plant of the genus in Utah, and may include several species recently 

 erected. The sides of the banner are reflexed, so that the outline 

 is oblong, notched; white spot, deep purple veined; banner deep 

 purple below, and shading to white at tip, or purple throughout, 

 slightly sulcate, ascending 30°, sides most reflexed at base; wings 

 long, dark purple at base, and white from tip of keel to apex, 3 

 lines longer than keel, rounded, obscurely erose or notched, as- 

 cending near the tip. The pod is fleshy, black hairy or nearly 

 glabrous, plain or spotted, straight or arched into a semicircle, 

 round or obcompressed, sulcate or not. It grows everywhere ex- 

 cept on alkaline flats in the valleys, but does not go beyond the 

 higher foothills of the mountains. 



