12(j 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 3ti7 (1878) as species). A. ursinus Gray. A. Wilsoni Greene. Pods 

 smooth, a little cioss-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 reachia.':;- 

 within 5 mm. of banner tip and is barely wider than the reflexed p^rt 

 on each side. Wings 2 mm. wide, straight, concave to keel and pressed 

 close, 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 deei)er 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 strict, 5-7 cm. long, sulcate, about 

 half as long as the racemes and about as long as leaves. Leivf^s 

 nearly sessile above, with 5-7 pairs of oval-ovate, rather notched leaf- 

 lets about 1 cm. long, which seem glaucous but are whitish with fine 

 wavy appressed hairs, rather sparse. Stems erect, thick, nearlv 

 straight, rather fleshy from a woody root. Stipules green, reflexed, 

 about ^^ 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 Cout. 8 3 (1898). 

 Pods as in the var. Mokiueensis but silvery white, in long racemes 

 often a foot long, and suture intruded about two thirds. Peduncles 

 the same as above but axillary nearly throughout and slender in flower. 

 Lenves about the same but all petioled and rarely over 5 cm. Ion.?, 

 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, 

 Clr-arly a winter annual. Tropical in the Colorado desert. Extend- 

 ing as far east as Kelso California east of the Amargosa desert. 

 This shades directly ii to the var. Coulteri. 



