122 Inflati 



veined, 3-4 mm. long and high, arched into about a half circle, on 

 a rather long-exserted claw. Calyx oblongcampanulate, 4-7 mm. 

 long, nigrescent, the triangular-subulate teeth about as long as tube 

 but variable. Pedicels 2-4 mm. long with bracts ovate to lanceolate 

 2-5 mm. long and hyaline. Peduncles 5-15 cm. long, rarely as long 

 as leaves, stout. Leaves with variable petioles but never as long 

 as rachis, 1-2 dm. long, the rachis and peduncles coarsely sulcate. 

 Leaflets 6-12 pairs, round to rather broadly elliptical, shortly petio- 

 lulate, veinless, rounded to notched, 2-15 mm. long. Stipules ovate 

 to triangular-subulate, not connate, spreading and rather stiff, rarely 

 5 mm. long. Stems tufted from a branched and woody root, as- 

 cending, branched below, a few inches to 2 ft. high, the pods about 

 pendent on the nearly horizontal peduncles. Growing on gravelly 

 slopes and flats in rather poor soil. From western Wyoming on the 

 bad lands and the western base of the Wasatch through San Pete 

 and Sevier Valley to Cedar City and Pioche Nevada and northwest- 

 ward to the Tukenon river Washington and Spence's Bridge B. C. 

 and the Snake River valley and Lewiston, Idaho, more common at 

 the north. Lower Temperate life zone. 



Astragalus Beckwithii van. purpureus Jones Cont. 3 288 (1893). 

 A. artemisiarum Jones. Pods filled with pulp when young and 

 becoming very rigid when ripe. Flowers with purple banner and 

 keel and bases of wings, white spot purple-veined. Wings obliquely 

 ovate. Leaflets inclined to be diamond-shaped, not over 1.2 cm. long, 

 about 1 cm. wide. This is the common form in eastern Nevada. 



Astragalus Beckwithii var. Weiserensis Jones Cont. 9 47 (1900). 

 Pods little mottled, coriaceous, about 4 mm. high, 1 cm. wide and 

 2.5 cm. long, arcuate to about one third circle, pungently acute, oblong- 

 elliptical, ventral suture raised as a wing 1 mm. high. Flowers few, 

 racemose to almost capitate, al)0ut 2-2.5 cm. long, not colored, thick. 

 Banner abruptly arched at calyx tips, about 4 mm. longer than wings. 

 Wings boardly linear to elliptical-oblanceolate 3-4 mm. wide, 3-4 

 mm. longer than keel, almost acute. Calyx tube about 4 mm. long 

 and high, with the narrowly-linear teeth as long as tube as in A. 

 megacarpus. Bracts about 1 cm. long, two to three times as loni? 

 as the pedicels. Peduncles about half as long as the leaves. Leaves 

 about 2 dm. long, with 6-8 pairs of elliptical to obcordate leaflets, 

 mostly 2 cm. long. Stipules very large, deltoid, 1 cm. long. Stems 

 rather stout a foot long, decumbent. Cxrowing under the sngebrush 

 at Weiser Idaho, on the edge of the Lower Temperate life zone. 

 This has many of the characteristics of A. megacarpus as to flowers 

 and general habit. Though there are certain marked differences in 

 pods the remarkable similarity in flowers and general habit shows that 

 all the species of this group are intimately related. Watson's No. 

 271 is a mixture of material, that from the Coyote Mts. Nevada is 

 this variety in all probability. 



78. Astragalus triquetrus Gray Proc. Am. Acad. 13 367 (1878). 

 A. Geyeri var. triquetrus (Gray) Jones. Pods somewhat arcuate- 

 oblong, deltoid-acute at tip, and obtuse but somewhat narrowed at 

 base, about 6 mm. high and 3 mm. wide, deeply sulcate dorsally, and 

 with suture slightly produced below the middle, with flat sides, the 

 ventral suture a little concave and a mere line, the tij) flat, finely 

 nerved and smooth. Flowers minute, white, those of A. Geyeri. 

 Peduncles axillary, very slender and much shorter than the leaves. 

 Leaves 3-5 cm. long, short-petioled, many, divaricate. Leaflets about 

 4 pairs, elliptical. 5-8 mm. long. Stems flexuous, 1-2 dm. long, freely 

 branched, spreading from a slender annual root. Internodes 1-3 cm. 

 long. Pubescence ashy. Sandy deserts of southeastern Nevada. 

 Tropical. 



