Preussii, 155 
and 3 mm. longer, concave to it, flaring but not horizontal, 4 mm. 
shorter than banner. Keel almost exactly that of A. amphioxys, the 
long blade fully 7 mm. long and deep purple, gently arched to erect 
and very obtuse and rounded. Peduncles 1-2 dm. long, longer than 
the leaves, very stout and strict. Leaves 1-1.5 dm. long, with 5-8 
pairs of elliptical and rounded to notched leaflets 1-2 cm. long. Stems 
strict, 2 ft. high, often 1 em thick, with large hyaline stipules. 
Though close to A. Preussii this can be readily separated by the 
strict coarse stems, spicate flowers, elliptical leaflets, and sessile 
pods. Sandy soil in washes and alkaline ground. From Canon Dia- 
blo Arizona on the Little Colorado westward to the Sierras and 
southward through the Mojave desert to Mexico, mostly tropical. 
The forms outside of the Mojave region are not typical but more 
like A. Preussii itself in the leaflets, or with smaller flowers. 
112. Astragalus asclepiadoides Jones Cont. 4 17 (1893). Jonesiel- 
la Rydberg. This is the most unique species in the genus. Pods 3-5 
cm. long including the stipe and beak, the body nearly 1.5 em. wide 
and high and about 2-3 em. long, the conical beak 5-10 mm. long and 
straight, the stipe 1-1.5 cm. long and obconic at tip and nearly 1 mm. 
thick and straight. Body abruptly rounded to truncate below and ab- 
ruptly beaked, coriaceous, mostly purple-stippled, from almost exactly 
conical-ovate to obliquely oval-ovate, mostly a little suleate ventrally 
and both sutures a little intruded. Flowers greenish-white, rarely purple 
tipped, 2 cm. long, narrow, 5-10, about as in A. Preussii but narrower 
and lighter. Banner with sides reflexed about 2 mm. wide opposite 
keel only; groove U-shaped, nearly 2 mm. deep and 1 mm. wide, 
extending nearly to tip, waterlined. Wings oblong-linear, bright- 
pink-purple above 3 mm. longer then keel. about 2 mm. wide, close- 
pressed to keel about to tip then spreading and tips incurved and 
horizontal. blunt, nearly straight. Keel about 7 mm. long, the base 
a little convex and tip erect, triangular and abont 3 mm. high. Calyx 
tube about 8 mm. long, 3 mm. wide and tapering below and arched 
near the base, nearly equally inserted at the triangular-acute fleshy 
base, cleft much deeper above, black-speckled, teeth triangular and 
about 2 mm. long. Leaflet leathery, glaucous, strongly pinnate-veined, 
barely acute, appearing as if clasping but on a petiole about 2 mm. 
long which is flanked by the hyaline, deltoid to circular 5-7 mm. long 
stipules like wings. Stems stout, nearly erect, little branched, few 
from the tip of the rather fleshy and erect root. Internodes shorter 
than the lenflets which are overlapping and appressed. Common in 
the poorest adobe soil from the Uinta Mts. to the Henry Mts. and 
ronghout the Navajo Basin from Price to Grand Junction. Also on 
the clav bad lands at Gunnison Utah in Sevier Valley. This does not 
f" w where alkali stands but often there is alkali all round it in 
a white efflorescence, but it never grows in any but compact soil, 
and it grows where not even Sarcobatus will exist. 
113. Astragalus Pattersoni Gray in Brandegee’s Rep. S. W. Colo. 
285 (1876). Phecopsis Rydberg. A. diphysus var. albiflorus Gray, 
A. recedens Greene. This is also a very variable species, the pods 
in the type are about 2 cm. long. 8 mm. wide and 5 mm. high, straight, 
oblong, a little oblique. the ventral suture about straight and the flat- 
tish sııhulate beak 4-6 mm. long and nearly in line with it, pods round- 
ed at base, faintly cross-ribbed and low reticulated, with a tendency 
to be contracted in the middle, on very stout pedicels 2-3 mm. long, 
erect, inclined to be a little sulcate at both sutures, but the sutures 
rrised and thick externally. Leaves drying yellowish. Banner ob- 
long-ovate, about 1 cm. long, arched in gentle arc to erect beyond calyx, 
sides much reflexed and so seemingly very narrow. Wings about 
1 mm. wide, 2-3 mm. longer than keel and about straight. Keel about. 
4 mm. long and high, with abruptly erect tip triangular, with u 
