140 Collini. 



KEY 



A. Pods 1.5-2 cm. long, 2-3 mm high, straight or little arched, later- 

 ally flattened, on a stipe about half as long as pod, and which is 

 fully as long as calyx. Peduncles strict, often a foot long.: Stems 

 erect. Leaflets nearly linear, about 1.5 cm. long. Flowers about 

 8 mm. long, the banner very stubby and arched almost back on 

 itself, round, 3-5 mm. long. Calyx about 6 mm. long, the teeth 

 about a fourth as long and deltoid. 

 Pods erect. 92 Tweedyi 



Pods not erect. 93 coUinus. 



2A. Pods arched, 2-3 cm. long exclusive of stipe. 



2AB. Rather coarse plants, mostly 2-3 ft. high, from thick and 

 woody roots. Peduncles stout and as long as leaves. Flowers 

 nearly 2 cm. long, rather coarse. Calyx tube about 8 mm. long 

 and 4-5 mm. high, pendent. Leaflets large. 

 Flowers large and stubby. Pods not spirally coiled. 94 Gibbsii. 



2A2B. Slender plants with flexuous stems rarely a foot high and 

 much branched, frorn slender roots. Peduncles slender and 

 and shorter than the leaves. Flowers not over 1.5 cm. long, 

 in short racemes, not coarse. Leaflets small, 5-10 mm. long, 

 Pods very flat, almost completely laterally flattened and with 

 sharp edoes, on filiform stipes, tightly coiled into 1-2 circles, 

 the body about 2 cm. long, the walls mostly separating with age, 

 and the outer wall contortedly reticulate and the main veins as- 

 cending along the sutures and pods spirally coiled, with tip en- 

 siform and very sharp. 

 Flowers large, 1. 5 cm. long,not stubby. Pods spirally coiled. Stipe 



oniy equaling calyx. 95 speirocarpus. 



Flowers 7 mm. long. Stipe 3-5 times as long as the calyx. 96 Alvordensis. 



92. Astragalus Tweedyi Canby Bot. Gaz. 15 1.50 (1890.) Phaca 

 Piper. Pods erect, about 1.5 cm. long, rigid and reticulated, almost 

 cartilaginous, opening first at tip, about 4 mm. high, cross section 

 nearly round. Along the Columbia at the mouth of the Yakima river. 

 Lower Temperate life zone. 



93. Astragalus collinus Dougl. in Hook. Fl. Bor. Am. 1 141 (1830). 

 Phaca Hooker, A. cyrtoides Gray. Pods pendent, opening first at base, 

 about 2 cm. long and 3 mm. high, faintly reticulated, mostly much 

 flattened laternlly. coriaceous. Grassy and sandy hills and flats. 

 Stems about 2 ft. high. Middle Temperate life zone nearly throughout 

 the Columbia Basin (except the valley of the Snake) and common 

 on the west. The type of A. cyrtoides from the Clearwater is clearly 

 A. collimis. The same sheet has a specimen of A. Gibbsii var. on 

 It, and the shape on this gave the name undoubtedly since there are 

 only flowers on the Clearwater specimen which forms the type of 

 A cyrtoides. Gray evidently thought the two specimens belonged to 

 the same species, which was not correct. 



94. Astragalus Gibbsii Kellogg Proc. Cal. Acad. 2 161 f. 50 (1863). 

 A. siniPtMs TMn- r. Phr\ca Piper. Pods variously arched even into 

 a circle, inclined to be acuminate at both ends, long-pointed, 4-5 mm. 

 wide or hisrh often decidedly obcompressed in the middle. Rather 

 cartilaginotis nnd corrngated and about round in the type, opening 

 first at base, the tip mostly erect, on a stipe about half as long as 

 body. Flowers many, in a dense spike-like raceme. Banner very short, 

 and stubby, mostjy broader than long and greatly reflexed, the erect 

 part 3 mm. hicb or less, about half as long as calyx tube, or nearly 

 as long, which is about 8 mm. long and 5-6 mm. high. Wings broadly 

 oblong, 3 mm. wide below and 2 mm. at the twisted and horizontal 



