203 
thin, ashy below or on the margins, contiguous. Stipules large, green 
above, ovate or broader, obtuse, often nearly as large as the adjoin- 
ing leaflet, veiny, adnate and connate on the petiole side but free or 
nearly so on the other, in young plants often almost imbricated, near- 
ly smooth. Stems many, 1-2 ft. long, green. Very abundant through- 
out Utah, except the Navajo basin. in valleys and on dry mesas in the 
sagebrush, never in alkaline soil, also extending to the headwaters of 
G.een river and the Wind river Mts. Wyo., throughout Idaho to Wei- 
ser and eastward and northeastward to the Continental Divide, north- 
ward through Montana on both slopes but only on the headwaters of 
the Columbia drainage particularly the Missoula and Deer Lodge val- ` 
iey, not elsewhere in the Columbia basin, southward to the Virgin riv- 
er Utah, westward to eastern Nevada where it is replaced by A. iodan- 
thus of which it there appears to be a well-marked variety. Lower 
Tenperate life zone, extending up into the Middle Temperate life 
zone. Blooming in spring and fruiting in June. 
183 Astragalus iodanthus Watson Bot. King.79 (1871). Pods 
linear-lanceolate, acuminate, mottied, 3-4 cm. long, arcuate almost to 
a circle, completely obcompressed, except at very base and the flat 
and ensiform tip, broadly sulcate dorsally the suture slightly raised 
within but a mere line without, the ventral suture a littie thickened 
but little raised, pods about 2 mm. wide, 2-3 mm. high in the middle, 
cross-sec:ion almost linear, base a little. narrowed or tapering but 
notched and on a minute stipe and inclined to be jointed to it. Flow- 
ers normally white, rarely light-purple. Banner oblong, about 1. cm. 
long, abruptly erect at calyx tips or nearly so, sides reflexed most 
just below the middle and thus making banner fiddle-shaped, not re- 
flexed at tip which is about 5 mm. wide and light-purple to white, the 
white spot obovate and purpie-veined, the blade thin, the groove U- 
shaped and 1 mm. thick and rapidly shallowing to a mere line above, 
the banner deeply notched. Wings oblong, arched from a little to 15 
degrees, a trifle larger above and obliquely rounded, bluish-purple 
above when colored, almost flat to keel with the upper side a little 
concave to it and the lower side the reverse, with flaring tips 2 mm. 
ods often curl out like rams horns, hence arose my name "arietinus 
