Hamosi. 254 
dm. long, longer than the leaves. Leaflets obovate to oblong- 
ovate, rarely linear. Stems branched from the base or acau- 
lescent. Pube:cesce hoary, of flat and appressed hairs at- 
tached by the middle. Stipules triangular and small, not con- 
nate. Species closely allied to Oxytropis.. Oxytropidoides. 
Pods acuminate. Stems long and prostrate. 2.8 Arizonicus. 
Pods not acuminate. Stems almost none. 219 calycosus, 
2A. Pods stipitate cr reflexed. Pubescence attached by the base. 
2AB. Pods erect cn a stipe shorter than the calyx and jointed to 
it, triquetrous, with concave sides, linear, 2-5 cm. long, 2-3 
mm. high, ecute at both ends, slightly larzer toward the tip, 
smooth, with cross-section Y-shaped. Flowers ascending, 
few and racemose. Banncr oval, 5-8 mm. long, abruptly 
arched at calyx tips to erect or more. Wings about linear. 
Keel blunt. Bracts minute.. Peduncles shorter than the leaves. 
Leaflets thick, flat, distant. Calyx spreading to horizontal in 
fruit. Pubescence ashy and closely appressed when present. 
Stems rather ru:h-like and round, colored like the leaves. 
Hairs short, flat, white but inclined to be dark on the calyx. 
Plants of the Californian deser’s. Orcuttiani. 
Leaflets about 4 pairs. 220 Bernardinus- 
Leaflets about 15 pairs. 221 tricarinatus- 
2A2B. Pods deeply sulcate dorsally, generally obcompressed be- 
low, and much arcuate, chartaceous barely wider above, 
about 2-3 cm. long and 2 mm. high, smooth, on stout stipe 
shorter than calyx and not jointed to it, cross section rather 
deltoid or oblately so, with the same peculiar, stubby, de- 
clined tip as in A. Drummondii. Leaflets about 12 pairs, 
gradually smaller above, distant, neerly round, on very short 
petioles and with long and tapering leaf-rachis. Tropical. 
Pods with concave sides, and flowers about 7 mm, long. 222 Orcuttianus. 
2A3B. Pods reflexed (apparently asccrding in the A. Nevinii 
group or at least indifferently zprcading), triquetrous in 
cross-section, never straight. 
2A3BC. Pods not stipitate, jointed to calyx, linear, much ar- 
cuate. Flowers small. 
Pods arched to a half circle. ' ` 223 drepanolobus- 
2A3B2C. Pods stipitate (minutely so in A. Congdoni and An- 
dersoni). 
2A3B2CD. Peds jointed to a stipe which is shorter than 
the calyx, linear to narrowly oblong. 
2A3B2CDE. Whole plant softly silky, even the pods pu- 
bescent. Pods with cordate cross-section, slightly sul- 
cate dorsally. Flowers white or whitish, with elon- 
gated banner 1-1.5 cm. long. Calyx tube about 4 mm. 
long, rather truncate below and inserted on the cor- 
ner, cleft deeper above and oblique. Leaflets ellipti- 
cal and apiculate. Pubescence of very fine, long, 
twisted or wavy, nearly smooth hairs. 
x Pod closely reflexed. 224 Congdoni. 
Pods not closely reflexed. : 225 Andersoni. 
2A3B2CD2E. Whole plert smooth or nearly so including 
the shiny pods. Flowers small. — — 
Pods arched to a half circle. _ 226 sylvaticus- 
+ 2A3B2CD3E. Pods shortly appr ssed-pub t, tapering 
