«7 



INFLATI. 



Pods papery, rarely ehartaceoiis, (coriaceous only in A. 

 Beckwithii, oocarpus, and lentiginosus at times) conspicuously 

 inflated (some forms of A. lentiginosus, Palmeri, and pauci- 

 florus onl.y slightly so), wholly 1-celled (except in A. lenti- 

 ginosus which is variously 2-celled and A. Beckwithii and 

 triquetrus have the dorsal suture raised within somewhat), the 

 dorsal suture not at all produced (except as noted above), 

 the ventral suture somewhat thickened and produced within 

 and seed-bearing along the middle only, mostly suleate ventral- 

 ly and the suture nearly straight to concave or sometimes 

 convex in the middle, the dorsal suture the more arched and 

 rarely suleate, pod tardily opening. 



KEY 



A. Pods wholly 1-ceiled (dorsal suture a little intruded in A. Beck- 

 withii) 



AB, Pods small, rarely 2 cm. long, sessile, jointed to a minute stipe 



in A. pubentissimus and sabulonum, never balloon-shaped. Calyx 



turbinate to campanulate. Flowers small rarely 1 cm. long. 



ABC. Densely tufted or caespitose perennials. Flowers racemose, 



much arched, widely spreading or reflexed. Keel purple 



Pods reflexed or horizontal. Leaves ail petioled and crowded 



Miseres. 

 ABCD. Flowers 5-8 mm. long. Stipules connate high up and 

 inclined to turn black in drying. Peduncles filiform, axil- 

 lary, shorter than the leaves, over 2 cm. long. Leaves 

 about 5 cm. long, with 4-6 pairs of narrowly elliptical leaf- 

 lets about 1-2 cm. long which are cuneate at base and api- 

 culate. Stems very slender, branched below, very many, 

 1-2 feet long, about prostrate, from a rather much branched 

 root. Northern plants. 

 Pods oblong, inclined to dry black, little inflated, much flattened. 



31 pauciflorus. 

 Pods nearly globose, not blackening, much inflated, not flattened. 



32 miser. 

 ABC2D. Flowers mostly barely 5 mm. long. Stipules not- 

 connate, broad and reflexed, small, not turning black. Pods 

 very oblique but not aircuate, papery. Peduncles barely 1-2 

 cm. long and with rachis about as long. Leaves about 3 cm. 

 long, with 3-5 pairs of oval to cuneate-obovate notched leaf- 

 lets, not over 1 cm. long. Stems branching above, prostrate 

 about a foot long or less, flexuous and with short internodes. 

 Plants of the sagebrush plains at the eastern base of the 

 Sierras. 



Whole plant softly long-hairy. 33 Pulsifers. 



Plants ashy with closely appressed short hairs. 34 diurnus. 



