VOL. 11.] Contributions to Western Botany. 289 
the type in the purple flowers, keel ¥% broader, longer pod, which 
is cartilaginous and so thicker, pulpy pod, while the type has a thin 
and almost transparent pod, without pulp when young. If this 
latter point holds good in all cases, it is a good species. It is at 
once distinguishable from the type everywhere, and nevér has been 
found east of the Deep Creek Mountains in the western edge of 
Utah. 
ASTRAGALUS CANADENSIS L. and A. Mortoni Nutt. have the 
following characters in common: Flowers in dense spikes, horizontal; 
calyx white, flattened, somewhat gibbous, hairy, tips broadly trian- 
gular and tufted with hairs, short; banner arched in a wide arc, 
sides reflexed, at tip the most, very little elsewhere; sulcus trian- 
gular and acute at tip of banner, rounded at base of banner; banner 
equaling the keel, ochroleucous; wings ascending and narrow, ex- 
posing both the tip and base of keel, obtuse, a line longer than keel. 
AsTRAGALUS CANADENSIS has calyx decidedly notched on the 
upper side; bracts subu'ate, short; wings linear but slightly wider 
at blunt tip; keel little incurved; leaves in about 13 pairs and in- 
clined to be lanceolate; spikes not denser fruited than in the other 
species. The keels of both species are veined. 
AstRAGALUS Mortont Nutt. Calyx teeth not unequal; wings 
oblong-lanceolate, 1% lines wide at base; keel purple tipped, arched 
to % of acircle; bracts ovate to lanceolate, 1 to 2 lines long; leaves 
inclined to be oblong and much smaller than in Canadensis; flowers 
in a closer and shorter head. Pods pubescent and densely aggre- 
gated, ascending as in the other species. ~ 
A, Canadensis was just coming into bloom at Grinnell, Iowa, on 
August 16, 1892, at 4,000 feet altitude, while 4. J/ortoni was well in 
bioom at Muncy, Eastern Nevada, on July 6, 1891, at 6,000 feet 
altitude. 
AsTRAGALUS DoDGIANUs, n. sp. Many stemmed from a woody 
root; stems very slender, flexuous, branching from the base, 6 to 
24 inches long; stipules sheathing at the base, membranous and 
barely pointed, upper ones connate at base and very broadly trian- 
gular; whole plant except the glabrous pods minutely and sparsely 
pubescent; leaves 1 to 2 inches, with proper petiole 14 an inch; 
rachis leaf-like; leaflets 4 to 5 pairs, narrowly elliptical to linear, 2 
