44 Contributions to Western Botany, No. [X. [ZOE 
It grows in close tufts 2% feet high and is erect, like /depes. 
When young the flowers are almost pure white, turning to cream- 
color with age, 34 inch long, horizontal; calyx 114 lines long, 
almost round in cross-section, nearly truncate at base, inserted a 
trifle below the middle, white, both sides straight, mouth gib- 
bous, the lower side decidedly longer; teeth 4% line long, deltoid- 
triangular; banner fiddle-shaped by being much contracted % the 
way up from the base, abruptly arched to vertical at a point 1% 
to 2 lines beyond the calyx tips, a little hooded at tip and with a 
somewhat thickened claw, nearly oval in outline but appearing 
oblong, sides reflexed only in the middle, but much so there, and 
with the reflexed part about a line wide, sulcus very deep and a 
mere slit at base, but it shallows and becomes very broadly V- 
shaped above, water-lined, erect part 3 lines long, truncate at tip, 
wings about 2 lines wide and one line longer than the keel; 
obliquely oblong and rounded, both of them concave to keel and 
flaring beyond it, nearly straight; keel blade about 2 lines long, 
abruptly rounded and with straight and erect tip, 114 lines high, 
acute, yellow-tipped; pods horizontal, cross-section half-oval, 
broadly shallow-sulcate ventrally, compressed at the short-stipitate 
base, very thin and papery, with oily or watery drops inside, trans- 
lucent, red-nerved and stippled above, nearly straight. Fruit 
ripe in May. 
ASTRAGALUS MuLFoRDA‘ Jones. This was described provision- 
ally from a single specimen collected by Miss Mulford at Weiser, 
Idaho, there being no data to indicate its habitat. Last year the 
writer found it almost out of fruit, and this spring again in full 
flower and fruit. Unlike the species to which it seemed the most 
related its habitat is on the hottest south slopes of yielding sand 
beds on the upper edge of the juniper belt. Back of Weiser 
there are bluffs several hundred feet high of friable clays, sands 
and infusorial earth, which weather into steep slopes with soil so 
soft that a person’s feet sink down several inches as he walks or 
climbs overit. Thisis the home of this species. ‘The roots are sin- 
gle, thick and fleshy at the erect tip, and run down many feet eae: : 
straight into the ground; atthe crown they branchintomany smaller 
crowns which form an open mat a few’ sence wide, from the mats 
