126 Inflati 
tube and filiform teeth. Peduncles rarely half as long as leaves. 
Leaves often 1 dm, long, widely spreading, with about 8 pairs of oval 
to elliptical leaflets 1-2 cm. long, mostly notched and smooth. Stems 
normally elongated and straggling over the ground. Growing in 
rather alkaline soil along the tributaries of the Colorado river from 
the San Juan to Grand Junction Colorado and westward to Virgin 
City, Utah. Southward at least to Flagstaff Arizona, This is the 
common form of the species in the Navajo Basin. Lower Temperate 
life zone. A. araneosus Sheldon from Frisco Utah (Jones) is a form 
intergrading with the var. diphysus. It also occurs at Detroit Utah 
and Austin Nevada. 
_ Astragalus lentiginosus var. Mokiacensis (Gray Proc, Am. Acad. 
13 367 (1878) as species). A. ursinus Gray. A. Wilsoni Greene. Pods 
smooth, a little cross-wrinkled, 1.5-2 cm. long and about 5 mm. wide, 
with cross section round and inclined to be sulcate ventrally and a 
little dorsally but shallow, almost straight to a little bent in the mid- 
dle, only slightly oblique, ascending, coriaceous, with dorsal suture 
intruded hardly half way below, the pods vary from ovate-lanceolate 
to linear lanceolate. Flowers bright pink-purple as in A. Utahensis, 
bluish when dry, horizontal to little ascending, about 2 cm. long, not 
narrow. Banner oblong-oval, about 1.2 cm. long, abruptly arched 
to nearly erect at calyx tips, with sides reflexed 4 mm. wide below, 
little above; groove shallow and very broadly V-shaped throughout; 
white spot obovate, barely reaching tip of keel, striate-purple-veined, 
narrow and small, about 3 mm. wide and 4 mm. long, not reaching 
within 5 mm. of banner tip and is barely wider than the reflexed part 
on each side. Wings 2 mm. wide, straight, concave to keel and pressed 
elose, about 1 mm. longer, rounded. Keel half-spatulate, about 3-4 
mm. wide at tip, straight, 7 mm. shorter than banner. Calyx tube 
about 5 mm. long and 3 mm. high, cylindric-campanulate, greenish 
or reddish, oblique, sparsely nigrescent, cleft deeper above with 
rounded sinuses, somewhat laterally flattened, attached near the 
midddle at the fleshy base to the stout pedicel, teeth subulate and 
about 2 mm. long, the lower the longer. Pedicels about half as long 
as the lanceolate and hyaline bracts which are about 3 mm. long. 
Peduncles stout, subterminal and striet, 5-7 em. long, sulcate, about 
half as long as the racemes and about as long as leaves, Leaves 
hearly sessile above, with 5-7 pairs of oval-ovate, rather notched leaf- 
lets about 1 em. long, which seem glaucous but are whitish with fine 
Wavy appressed hairs, rather sparse. Stems erect, thick, nearly 
Straight, rather fleshy from a woody root. Stipules green, reflexed, 
about 5 mm. long. Growing.on the plateau south of St. George on 
both sides of the Colorado river. Lower Temperate life zone. This 
seems like a well marked species but it intergrades through the 
var. palans. 
Astragalus lentiginosus var. Borreganus Jones Cont. 8 3 (1898). 
Pods as in the var. Mokiacensis but silvery white, in long racemes 
often a foot long, and suture intruded about two thirds. Peduncles 
the samé as above but axillary nearly throuzhout and slender in flower. 
Leaves about the same but all petioled and rarely over 5 cm. long, 
the leaflets about 5 pairs and obovate mostly and silvery white with 
very fine and closely appressed hairs. Flower about the same relative 
_ Shape but hardly 1 cm. long, the keel being oblately half-oval-ovate, and 
the calyx tube hardly 4 mm. long. Pedicels almost none, 1 mm. long 
in fruit, Stems slender and flexuous, rarely a foot high and branched. 
Clearly a winter annual. Tropical in the Colorado desert, Extend- 
ing as far east as Kelso California east of the Amargosa desert. 
_ This shades directly irtothe var. Coulteri. _ } tine 
