Collini. 139 



COLLim 7. 



Pods somewhat fleshy when green, coriaceous (almost 

 cartilaginous in A. Gibbsii,) not inflated, linear or nearly so, 

 elongated, stipitate but stipe not jointed nor the pod jointed to 

 it, 1-celled and with sutures not at all intruded, laterally flat- 

 tened (rarely obcompressed in the middle in A. Gibbsii), in- 

 clined to split first at base along both sutures and through the 

 the stipe but with valves not curling, with both sutures thick 

 and raised externally and rib-like, pod acuminate or triangu- 

 lar-acute at both ends, flat-beaked, arcuate (rarely straight in 

 A. collinus and Tweedjd) often to a circle or more, wtih the 

 ventral suture concave and the tip in line with it, opening first 

 at base, rarely at tip. Flowers cream-colored, 7-15 mm. long, 

 racemose and mostly densely so, variously reflexed, stubby. 

 Banner mostly much recurved and fleshy at base, with wings 

 inclined to extend beyond it and these mostly much longer 

 than keel, banner blade often shorter than calyx tube. Keel 

 short and long-clawed, with tip erect abruptly or a little more 

 than erect, about 3 mm. high. Calyx short-cylindric to campa- 

 nulate, inclined to be a little inflated, hyaline, cream-colored, 

 very oblique at both ends, the upper side arched to nearly 

 one third circle, the lower side straight, inclined to be saccate 

 on the upper corner at the insertion and inserted on the lower 

 corner which is mostly cut away a little there, the cal.yx re- 

 flexed and mostly inserted at right angles to the pedicel which 

 is relatively slender, erect, and as long as the minute and 

 mostly subulate bract, 1-3 min. long. Peduncles in the upper 

 axils. Internodes many and short, the uppermost the short- 

 est. Leaves short, 2-10 cm. long, widely spreading, almost 

 sessile. Leaflets 4-7 pairs, nearly contiguous, long-petiolulate, 

 thiekish but not fleshy, from nearly round or obovate to nearly 

 linear, truncate to deeply notched at tip, not over 1.5 cm. long, 

 often folded, subalternate, minutely woolly (smooth in A. por- 

 rectus) with fine white hairs which are attached by the larger 

 base and then arch over and Avith tips variously appressed 

 and wavy bu tnot abruptly appressed at attachment as is 

 the case with most species with appressed hairs . Stems 

 flexuous, slender, erect or nearly so, much tufted, more pub- 

 escent than the leaves, 1-2 ft. high, with branches often 

 widely spreadnig. Stipules and bracts small or mimite, rigid, 

 greenish. Perennials of the Columbia Basin and along the 

 eastern side of the Sierras only. Middle and Lower Temper- 

 ate life zones, growing on grassy or sagebrush plains and 

 blooming in summer. 



