195 
June. 
Astragalus gracilentus var. Hallii (Gray) Jones Cont. 813 (1898). 
This differs from the type in having the pods wider above and more 
inflated, smoother, rather clavate-oblanceolate, 5-7 mm. wide, about 2 
cm. long, wiih ventral suture straight or concave near the narrowed 
base, and variably convex at tip, little laterally flattened or rarely 
round in cross-section, distinctly stipitate, coriaceous to chartaceous. 
Flowers and pods inclined to be short-spicate to almost capitate, the 
flowers about 1.5 cm. long, stubby, with calyx tube about 5 mm. long 
and 4 mm. high, and with minute deltoid teeth. Twin Lakes and the 
Sangre de Christo mountains Colorado and San Francisco mountains 
Arizona, Middle Temperate life zone. 
Astragalus gracilentus var Greenei (Gray) Jones Cont. 8 14 (1898). 
Pods strictly sessile, with minute and spreading hairs, splitting the 
calyx, 1.5-2 cm. long and nearly 1 cm. wide and high, broadly sulcate 
ventrally, oval to oblong-ovate, conspicuously inflated, faintly cross- 
ribbed, witha triangular, flat and stout beak. Flowers shortly-race- 
mose, 1-1.5 cm. long, as in the type but the calyx teeth subulate and 
half as long as tube. Leaflets broadly oblong, rounded, about 5 mm. 
long. Peduncles longer than the leaves. \Vhole plant ashy, and the 
steins and peduncles almost white. Mogollons New Mexico, bloom- 
ing in April. The type of this form is in the Gray Herbarium and 
duplicate material is in my herbarium and a few others but variously 
mixed since Greene did not know one form from the other confusing 
fallax forms with it. All of themature plants and most of the pods 
he distributed are fallax. 
Astragalus gracilentus var. exsertus N. Var. Thisisa very remark- 
able form wıth few flowers about 2 cm. long, brilliant-purple, strongly 
striped and with exserted claws. The oblong banner is nearly 1.5 cm. 
long with sides much reflexed below, slightly and abruptly arched be- 
yond the calyx tips to 30 degrees, about 2 mm. longer than wings. 
Wings 2 mm. wide. a little arched and obtuse, purple-striped, 3-4 mm. 
longer than keel. Keel straight, forming nearly a half circle, 4 mm. 
long, and 3 mm. high, the tip erect and triangular, light-colored. Ca- 
lyx tube about 5 min. long and 3 mm. high, about as long as the subu- 
late teeth. Bracts much longer thanthe short and stout pedicels, 4 
mm. long. Pods about 2 cm. long, 1 cm. wide and high, sulcate ven- 
trally, strongly cross-ribbed and almost cartilaginous, oblong, sessile, 
splitting the calyx, the stout and flat beak upcurved and about 4 mm. 
long. Ventral suture straight, dorsal suture much arched, cross-sec- 
tion rather obcordate. Leaflets 6-12 pairs, cuneate-oblong, notched, 
fully 1 cm. long. Whole plant minutely woolly. Stipules green, 
nearly linear, almost 1 cm. long. Trinidad Colorado, No. 7 Geo. E. 
Osterhout, 1898. 
Astragalus gracilentus var. fallax (Watson) Jones Cont. 8 14 
(1898). Pods obliqueiy oblong-oval, to ovate, about as in the preced- 
ing variety but ventral suture rather convex above and not sulcate, 
pods short-hairy, abruptly stipitate the stipe being nearly as long as 
calyx. Flowers much as in the type but about 1.5 cm. long, and stub- 
by. Banner oval, about equaling the wings and not much longer than 
keel. Calyx teeth rudimentary, deltoid, the tube inserted at right an- 
gles to the pedicel, very oblique on the lower side and convex above, 
about 5-7 mm. long. Peduncles stout, much longer than the leaves. 
Leaflets 3-15 mm. long, cuneate-oblong to nearly linear. Stipules 
and bracts very broad and very short. In the pine forests of the San 
Francisco plateau of northern Arizona, on gravelly mesas. Middle 
Temperate life zone. It blooms in summer. o. Pa 
Astragalus coriaceus Hemsley Bot. Cent. Am. 1 ( . Pods 
arcuate, cylindrical, about 2 cm. long and 7 mm. wide, with acuminate 
beak, sessile, smooth. Flowers racemose on short pedicels, few, about = 
I.5 cm. long. Calyx tube short-cylindric, teeth subulate and about i 
