323 -~ 
leaves acuminate. Leaflets gradually smaller, often 20 pairs, with the 
pubescence very fine and inclined to be shaggy-woolly and white but 
the dark-green of the leaves not wholly concealed. About stemless, 
with several thick crowns from the thick and fleshy root, not at all 
woody. This form is even more beautiful than the species, but it in- 
tergrades at all points. It is a better developed form and is never yel- 
low and has much longer pods. It growsin a more arid region, show- 
ing that the species of the Plains (the type) is near its eastern climat- 
ic limit, and is better adapted to more western regions. This is alsoe.i- 
dent from the fact that western forms are more specialized. Through- 
out the Navajo Basin from the base of the Uintas to the Wasatch aid 
Chepeta Well (Colorado) east of Vernal Utah, southward through Man- 
cos and Farmington New Mexico and westward along the Colorado to 
Pioche Nevada, and northward through Wa Wa (west of Frisco) and 
as far as Cottonwood Spring west of St. John Utah on the desert side. 
Lower Temperate life zone in sandy and loose gravelly soil, apparent- 
ly not growing on the Sevier though to be expected. 
189 As:ragalus Phoenicis Jones Cont. 8 12 (1898). Pods cylindri- 
cal or nearly so, 2 cm. long, 5 mm. wide and about 3-4 mm. high, nar- 
rowly oblong, straight, barely splitting the calyx, obcompressed a lit- 
tle, scarcely sulcate ventrally, the somewhat flattened beak triangular 
and a simple projetion of the nearly straight ventral suture and not at 
all upturned, partition hardly complete even in the middle, pods finely 
and appressed and very short-pubescent, about a third longer than the 
calyx. Flowers horizontal to asending. Banner oval, gently arched 
to 45 degrees from the calyx tips, the blade about 1 cm. long, with the 
sides reflexed 1 mm. wide, the claw rather long. Wings oblanceolate. 
gently arcuate, a little longer than keel and 2 mm. shorter than ban- 
ner. Keel straight, the tip erect and blunt and gently arcuate from 
the base. Calyx tube about 7 mm. long and 3 mm. wide, nearly twice 
as long as the triangular teeth, densely appressed-short-hairy, a little 
wider below, rather truncate below and obliquely attached. Pedun- 
cles scapose, about 1.5 dm. long including rachis which is about one 
third the whole and rather loosely flowered, erect. Leaves 5-8 cm. 
long, silvery-silky with short and appressed hairs. the petioles half the 
whole. Leaflets 10-15 pairs, contiguous, oval, 7 mm. long, obtuse. 
Stipules broad, not over 1 cm. long, acuminate, puberulent. Stems 
caespitose, hardly 2.5 cm. long, covered by the imbricated stipules. 
Plants with the general habit of A. amphioxys. Northern Arizona, 
Palmer, Hillsboro New Mexico, Diehl. Lower Temperate life zone. 
This may be only a form of A. Humboldtii, bat the pods are more sym- 
metrical, it has the calyx of that «pecies. 
190 Astragalus Humboldtii Gray Proc. Am. Acad 6 193 (1854 , 
Pods oblong to oblong-lanceolate. 7-15 mm. long. about 5 mm. wide 
and 2-3 mm. high, arcuate, with sides inclined to be rugulose, closely 
felted when young and becoming smoother or even almost smooth 
tuse, rounded, with lower side a little notched. about 3 mm, longer | 
than keel, 1 mm. wide, white beyond the keel, flat or slightly concave 
to it, 4-6 mm shorter than banner. Keel about as high as long, with tip 
