Collini. 141 



tip, 2 mm. longer than keel. Keel purple-tipped. T^eaflets ojjloug • lO- 

 vate, rarelj' oblong-ovate, with cuneate base, about 1.5 cm. 1 w.ig, 

 notched. Whole plant even to calyx atu! pods finely and very shoi ! ly- 

 woolly. Common around Reno Nevada and northward, rare in the 

 Columbia Basin along the divide and running over to the 131 .c .Mts. aud 

 as far as Weiser Idaho, also extending down the Kla lath river. 

 Nearly everything referred to the species from the Coluinbi.3 D.siu 

 is the variety. 



Astragalus Gibbsii var. curvicarpus (Sheldon Minn. Stud. 9 125 

 (1894) as A. speirocarpus var.) A. speirocarpus var. falciformis Gfiy. 

 Pods nearly smooth, about 3 mm. high, much laterally flattened, often 

 curved to a circle, triangular-acute. Flowers rarely over 10 in a short 

 spike, the banner ovate and as long as calyx, wings elongated, 2 mm. 

 wide, arched, flaring at tip, 3-6 mm. longer than keel. Stems slender 

 and ascending. Whole plant nearly smooth. This extends from Austin 

 Nevada to the Sierras and northward along the rim of the Columbia 

 Basin to Baker City Oregon and Nampa Idaho. 



95. Astragalus speirocarpus Gray Proc. Am. Acad. 6 225 (1864.) 

 A. Whitedi Piper. Pods triangular-acuminate at both ends, 4-6 mm. 

 high, evidently spirally reticulated, puberulent, on a rather stout stipe 

 about as long as calyx. Flowers about 1.5 cm. long, with exserted 

 claws, rather many. Banner ovate and about 8 mm. long, with sides a 

 little reflexed, rather gently arched to 45 degrees beyond ialyx, about 

 4 mm. longer than keel. Wings about straight, narrowly oblong, a 

 little longer than keel. Keel about 3 mm. long and 2 mm. high, the 

 tip abruptly erect and triangular, base straight, the claw very long. 

 Calyx 5-8 mm. long, and 3 mm. high, about cylindric, but with the 

 usual shape, reflexed; teeth rudimentary, variably nigrescent with very 

 short lax hairs. Peduncles rarely 5 cm. long, the rachis about as 

 long. Leaves 5-7 cm. long, with 4-8 pairs of oblong-obovate, notched 

 leaflets nearly 1 cm. long. Plants ashy throughout. Sand dunes from 

 Near Yakima and along the Columbia near WalluUa on dry prairies. 



96. Astragalus Alvordensis Jones Cont. 10 67 (1902). Pods 

 shortly-triangular at tip and rather long-acuminate at base, about 3 mm. 

 hig;h, faintly reticulated, almost chartaceous, (somewhat, mottled, 

 hardly 1 mm. wide, often a trifle and very narrowly sulcate dorsally, 

 rather shining, on a filifrom stipe about 1 cm. long and 3-5 times as 

 long as the calyx. Flowers about 7 mm. long, purple-veined, widely 

 spreading, racemose, 3-8 (pods 1-3), on a rachis 3-7 cm. long and with 

 peduncle rarely over 1 cm. long. Banner ovate, arched abruptly beyond 

 calyx teeth to erect, about 2-3 mm. long, with sides much reflexed. 

 Wings lanceolate, narrow, abruptly arched near the end of keel to 45 

 degrees, about 1 mm. longer than keel and 2 mm. shorter than banner. 

 Keel with straight base, 3 mm. long, tip abruptly erect and obtuse, all 

 petals purple-veined. Calyx turbinate-campanulate, about 2 mm. long, 

 5-nerved, deeper cleft above and with oblique mouth, narrowed and 

 obliquely inserted at base. Teeth minute and deltoid. Pedicels hardly 

 half as long as calyx tube. Peduncles filiform and axillary throughout 

 Leaves about 2-4 cm. long, the petiole none or about as long as lowest 

 leaflet. Leaflets 6-8 pairs, cuneate-obovate, notched 4-7 mm. long, 

 rather hoary, less so above. Stems very slender and widely branched, 

 1-1.5 ft. long, ascending. Alvord valley eastern Oregon Cusick, June. 

 This unique species seems like A. speirocarpus, a delicate form, but the 

 flowers are very different and the stipe greatly elongated and the pod 

 much thinner and the walls not old enough to determine if they 

 split aways as in the other species. The habit is that of A. flexuosus. 

 Middle Temperate life zone, probably growing in sand. 



