208 
Astragalus argophyllus var. cnicensis N. Var. This is a form 
with long peduncies, stipules nearly contiguous, with stems many and 
densely tuited, short, ascending and with very many greenish leaves 
with very short and sparser pubescence, with narrowly elliptical apic- 
ulate leaflets about 1 cm. long, and with claw-like pods nearly 2 cm, 
Inog and not corrugated but ashy with short and rather dense hairs, 
lanceolate, a little sulcate at both sutures, with the flat tip abruptly 
arcuate to erect, decidedly obcompressed. Thistle Utah 1901, Mam- 
moth Utah 1911, in fruit in May and June. 
Astragalus argophyllus var. castanaeformis (Watson Proc. Am. 
Acad..20 361 1885 as species) Jones Cont. 10 62 (1902). Pods coriace- 
ous, little wrinkled, the walls when dry in some forms are almost 
chartaceous, conspicuously inflated, broadly ovate-triquetrous, half- 
oval, about 1.5 cm. long, 1 cm. wide, 5-7 mm. high, ashy, with ventral 
suture raised and thickened and straight and ending in the flat very 
short and deltoid beak, cross-section ovate-triquetrous, rarely slightly 
sulcate broadly near the base, dorsal suture very convex and raised as 
a thin line but not intruded. Peduncles 2-3 cmi long. Flowers about 
10, light-colored, the tips of wings and keel purple. Leaves 4-8 cm. 
long, with the petiole often as long as the rachis, Leaflets 4-8 pairs, 
obovate to elliptical, acutish to rounded, rarely 1 cm. long, ashy with 
short pubescence. Stems densely congested and very short, with im- 
bricated stipules. This is the thinnest-walled form of the species, it 
g ows in the pine forests of the Mogollons about Flagstaff and Wil- 
liams Arizona. 
Astragalus argophyllus var. pephragmenus (Jones Cont. 5 267 
1893 as species). Pods about 2.5 cm. long, 7-10 mm. wide, about 5 
mm. high, very fleshy, a little wrinkled, cartilaginous, from nearly 
lanceolate to oblong-ovate, oblique to a little arctate, ashy, rounded 
and jointed to a very thick and short stipe, scarcely more than strong- 
and deltoidly flat-beaked, with ventral suture very thick and raised 
(about 1 mm. thick when dry), mostly straight, with dorsal suture a - 
mere raised line externally and internally, convex, pods flattish dor- 
sally and sometimes a little bisulcate ventrally, cross-section about 
oval when dry, inflated. Leaflets 5-15 pairs, about oval, apiculate. 
rather thick, rarely 7 mm. iong, densely silvery-hairy, with closely ap- 
pressed hairs. Petioles often longer than the leaf rachis, and the leaf 
about 5-8 cm. long.. Stems much branched and tufted, ascending. a 
few inches long, with internodes, longer than the stipules, and the pe- 
du! c e a little longer than the leaves. Top of the Pinal Mts. Arizona 
among rocks, Middle Temperate life zone. This at once suggests A. 
Shortianus var.cyaneus but the pubescence is that of argophyllus 
with the wavy and fine hairs fixed strictly by the base, and the stems 
with produced internodes, but the pods are more like that variety 
Astragalus Zionis Jones Cont. 7 652 (1895). Pods arcuate, hori- 
zontal, abruptly long-acute with flat and subulate style, linear-oblong, 
2.5-3 cm. long, about 7 mm. wide and high, rather triquetrous but with 
rounded sides, flattened to a little sulcate dorsally and somewhat ob- 
compressed, bnt round when fresh, with cross-section oblong exter- 
nally and linear internally, with walls 2 mm. thick when fresh the in- 
ner part only coriaceous and wrinkled when dry, mottled, dried im- 
mature pods are laterally flattened, ventral suture not raised when 
fresh, when dry the suture is conspicuously raised and with the sides 
rather flat and ata sharp angle to eachother, jointed to the calyx, 
rounded and rather narrowed to it, shortly sparsely shaggy with ra- 
ther spreading hairs, never sulcate at base, widely spreading, when 
much arched then much obcompressed, the thread-like beak often 1 
em. long. Flowers short-racemose on stout and nearly erect pedun- 
cles 1-2 dm. long, purple-tipped, 14-20, about 2 cm. long. Bannera 
_ little over 1 cm. long, oval-ovate, with sides reflexed 2 mm. wide in 
_ the middle only, arched to 45 degrees beyond the calyx teeth, 
and groove nearly forming two thirds of a circle being 3 mm. wide 
x 
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