268 Contributions to Western Botany. [ZOE 
even to the pod shortly villous tomentose; leaves about four 
inches long, the petiole being one-third of it; leaflets eight to 
fifteen pairs, oval to elliptical, four lines long, greener above; 
peduncles including the rachis of the short spike equaling the 
leaves, stout, sulcate, ascending; bracts three lines long, ovate, 
scarious; flowers nearly sessile, six lines long, light purple, six 
to ten in a close raceme or short spike; calyx woolly, four 
lines long, teeth one-third the tube, subulate; keel two lines 
longer than the calyx and teeth, barely acute, incurved to one- 
third circle, purple tipped; wings about the same length as keel; 
pod an inch long, oblong, nearly straight, base rounded and 
jointed to a very short stout stipe one-third a line long, apex prow- 
like and abruptly acute (like A. Preusiz), dorsal suture very 
slightly impressed, very narrow externally, ventral suture very 
thick externally, not impressed but pod often slightly bisulcate 
ventrally, suture one-half a line thick externally and widest in the 
middle of the pod; pod one-celled, three lines wide, very thick 
walled (one-twentieth inch thick in the dried specimen), inner wall - 
dense, outer spongy; pod wrinkled longitudinally and obscurely 
so transversely; pubescence of pod minute but rather close and 
tomentose; hairs of the plant very slender, attached by the base 
and nearly smooth. This plant at once suggests 4. glareosus, 
Missouriensis, and Shortianus, but differs from them all in 
apparently good characters. I doubt if any connecting forms 
have ever been known that would place this as a form of 4. 
Shortianus. 
This was gathered on the summit of the Pinal Mountains, 
Arizona, May 26, 1890 in rocky places. I have been inclined to 
place it as a form of 4. Chameleuce and the latter plant I think 
is the same as A. glarcosus the older species, but I now regard it 
as a good species. It is in my sets recently distributed. 
Astragalus Purshii Douglas. The very imperfect description 
of this plant given in Flora N. A. T. & G. is manifestly the 
type as it exists in the great region which it covers, but there 
are two errors in the description, the flowers are not oneand one- 
half inches long and they are not yellow. Others have followed 
the Same error as to color of the flowers, being led astray by the 
color in the herbarium and by old flowers; the flowers are white 
