Ocreati. 240 
A2B. Calyx tube conspicuously long-hairy and shaggy; teeth 
and bracts very long. Flowers purple. Blooming in May. 
Whole plant appressed-silvery-silky. 202 argillosus. 
2A. Pubescence attached by the base. Peduncles long, with small 
flowers in narrow spikes which become racemose in fruit. Pods 
not splitting the calyx. Stipules small and united only below. 
Bracts 2-5 mm. long. Stems slender or almost none, nearly 
erect, flexuous, with very short internodes below. This grows 
on limestone cliffs and in sandy washes. : 
Sutures not thick. Peduncles filiform and rush-like. 203 Moencoppensis. 
Sutures thick. Peduncles not elongated. 204 troglodytes. 
200. Astragalus sophoroides Jones Zoe 2 12 (1891). Pods 
with ventral suture little raised, not very conspicuously thickened, 
arched, 5-9 mm. long, not 2 mm. thick, greatly obcompressed, el- 
liptical, barely acute, chartaceous, flattened but not suleate at base; 
seeds several, large. Flowers not over 9 mm. long, white to cream- 
colored, purple-tinged, short, erect. Calyx inclined to be shaggy. 
Bracts ovate to lanceolate, acuminate, about as long as calyx tube, 
5-7 mm. long, scarious. Peduncles none to 1 cm. long, and spikes 
2.5-7.5 cm. long, flower-cluster mostly sessile among the leaves and 
shorter than the leaves, earliest peduncles 7-15 mm. long, and spikes 
2.5-5 em. long and so appearing sessile among the leaves, but later 
peduncles often 1 cm. long and the spikes 7.5 cm. long, latest pe- 
duncles equal the earliest. Leaves 7.5-9 em. long. Petioles 2.5-4 
em. long. Leaflets 4-7 pairs, oblong linear to nearly oblong, rounded 
at end and cuneate at base, 2-9 mm. wide, 1-3 cm. long. Stipules 
connate even to the top of the stems, upper part acuminate-triangu- 
lar. Stems rather slender, 8-30 cm. long, internodes several and 
2.5-6 cm. long. Pubescence of stems very dense and a little spread- 
ing, on calyx rather coarse and entangled, on pods the same but 
shorter, oldest stems and leaves are sometimes only pubescent. On 
the Moencoppa, northern Arizona, Lower Temperate life zone on 
benches. 
201. Astragalus confertiflorus Gray Proc. Am. Acad. 13 368 
(1878). A. flavus var. candicans Gray. Cnemidophaeos Rydberg. - 
Leaflets 4-6 pairs, 1.5-2.5 cm. long, linear, 2 mm. wide. Spikes 
dense and many flowered, 5-7 em. long on peduncles 7-9 em. 
long. Flowers white, becoming cream-colored with age. Banner 
arched in gentle arc from base to tip to 45-80°; groove is V-shaped 
opposite keel tip but flattens out very greatly above where it is 3 
mm. wide and 1 mm. deep; sides reflexed to 1 mm. wide opposite 
the keel, not at all at tip and so making it seem obovate-oblong to 
fiddle shaped (in the dried plant seeming lanceolate) and elon- 
gated, emarginate. Wings obliquely lance-oblong, 1 mm. wide, the 
tip bent up to 45° and notched below the middle, 2-4 mm. longer 
than keel and coneave to it, the right hand one bent over keel 
tip and the other bent out but with its tip turned in and touching 
the other, concealing the keel. Keel very short relatively, exceeding 
the calyx tips 2-4 mm., the tip abruptly incurved to over 90° and 
‚very blunt and rounded, with a purple eye at tip which is sur- 
rounded by a narrow white edge. Calyx nearly round in eross sec- 
tion, about 4 mm. long, the lower edge straight and the upper a 
little arched, base with a fleshy green spot and oblique, almost ses- 
sile, cleft deeper above and with rounded sinuses, the teeth spread- 
ing, green and 2-3 mm. long. Pods bisuleate at the thick ventral 
suture, is trifle concave, or even convex, about 7.5 mm. long, oblong- 
oval, silky to smooth, moderately obcompressed mostly but not sul- 
eate dorsally. The flowers are often purple tinged and then the 
white spot is waterlined with purple. The pubescence of the calyx l 
is looser and finer, the calyx teeth and bracts are more filiform, 
