Contribution* to Western Botany. 19 



Astragalus straiurensts. The type is the writer's speci- 

 mens from Silver Reef S. Utah, 5000 ft. alt. in gravel, May 5th, 

 1894, growing among bushes. Parry's specimen ticketed "St. 

 George, Utah, 1874" and called A. atratus is the same but was 

 never collected at St. George nor in any place nearer than the 

 Pine Valley Mts. Stems tufted, many, ascending, 1 to 2 ft. high, 

 from an open perennial base, slender nearly simple, flexuous, 

 barely sulcate; nodes 1 to 3 inches apart; leaves widely spread- 

 ing as in A. Rusbyi, none of them sessile, about 4 inches long; 

 stipules not connate as in Rusbyi, triangular, green, recurved, 

 small, adnate; leaflets about 8 pairs, narrowly elliptical or lan- 

 ceolate (rarely some of the lower leaflets are oval, 4 lines long 

 and 3 lines wide,") obtuse to retuse, generally folded, 6 to 9 lines 

 long, long-petiolulate, nearly opposite, cuneate at base, pubes- 

 cence almost none, hairs fixed by base, leaflets lighter below; 

 flowering peduncles 6 to 8 inches long, in fruit often a foot long, 

 slender, erect; flowers in racemes which are as long as or double 

 the peduncle, 3 lines long, beautiful, ascending (pendent in fruit) 

 calyx nearly round, not gibbous, a little flattened above like A. 

 pictus Gray, ascending in flower, cylindric-campanulate tube a 

 line long, greenish; short pubescent, not nigrescent; teeth a little 

 shorter, the 2 upper triangular.the lower subulate; banner abruptly 

 bent to 90 degrees at calyx tips, oblong-oval, 3 lines long, notched, 

 sulcus very broad and shallow, shape )£ of a circle at base of 

 blade, nearly flat at apex, banner streaked with heavy purple 

 lines within and lighter lines en the sides; sides reflexed y 2 wide 

 below, little above, purplish, white spot scarcely evident; wings 

 bent up at tip of keel to 45 degrees, oblong-ovate, barely acutish 

 at apex and white, darker below, 2 lines long, a line longer than 

 keel, a line wide, concave to keel, tips the one vertical and the 

 other horizontal and spreading; keel extends a line beyond 

 calyx teeth, arched tip incurved to ~/i circle, short, triangular, 

 acutish, dull purplish, base straight; pedicels and bracts min- 

 ute and equal, ]/? line long, bracts ovate, acute, green; pods 

 arcuate, the dorsal side the more curved, ventral suture usually 

 concave, raised, prominent and keeled, pods green, membranous, 

 a trifle inflated, minutely pubescent when young, 6 to 8 lines- 



