| INFLATI. 
Pods papery, rarely chartaceous, (coriaceous only in A. 
Beckwithii, oocarpus, and lentiginosus at times) conspicuously 
inflated (some forms of A. lentiginosus, Palmeri, and pauci- 
florus only 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-celled (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 ceespitose perennials. Flowers racemose, 
much arched, widely spreading or reflexed. Keel purple 
Pods reflexed or horizontal. Leaves all 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. lona, 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 arcuate, 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 Pulsiferze. 
Plants ashy with closely appressed short hairs. ` 34 us. . 
