
Leguminaceae 235 
AA. Pod chartaceous or coriaceous, tough or leathery, 
: not inflated. 
B. Herbage long-hairy or woolly; pod often long-hair 
y or woolly. 
Group 2 (p. 235) 
BB. ~ Herbage and pod glabrous or short-pubescent. 
C. Pod with a stipe as long or longer than the calyx-tube. Group 3 (p. 236) 
CC. Pod sessile or nearly so. Group 4 (p. 237) 
GROUP | Teen 
A. Pod 2-celled, the .2 sutures intruded and meeting. E. (A. diaphanus.) 2 x mane 
A. lentiginosus Doug]. he el 
| AA. Pod 1-celled, the sutures not meeting if intruded. 
| B. Leaflets 1 3—19, linear to oblong, pod mottled. 
c C. Peduncles not exceeding the leaves; calyx-teeth subulate; pod 3—5 cm. long, 
obovoid, obtuse. W.C.E. (A. olympicus. ) SD] 
A. hookerianus Gray — 
CC.  Peduncles exceeding the leaves; calyx-teeth triangular ; pod 135-=2-5 ‘cm. 
long, oblong, with short acute beak. E. 
A. cusickii Gray 
BB. Leaflets 7—15 or fewer, linear or subulate when more than eleven. 
D. Leaflets cuneate-oblong to obovate, widest above their middle, obtuse or retuse. 
_E. Leaflets cuneate-oblong, 6—8 mm. long; pod 6—12 mm. long. E. 
A. suksdorfii How. 
EE. Leaflets obovate, 2—-6 mm. long; pod 12—20 mm. long. E. 
A. diurnus Wats. 
DD. Leaflets subulate to oblong or lanceolate, widest at or below their middle, 
often sharp pointed. 
F. Leaflets spinulose-tipped. 
G. Flowers purple; herbage sparsely hirsute. E. 
A. aculeata Nels. 
.GG. Flowers ochroleucous, or tinged with violet; herbage somewhat hoary- 
pubescent. E. A. viridis Sheld. (Prickly Rattle-weed) 
FF. Leaflets not spinulose-tipped. 
H. Pod mottled, ovoid; corolla pale rose-color; perennial. FE, 
A, ceramicus Sheld. 
) 




HH. Pod not mottled, ovate-lunate; corolla ochroleucous; annual. E. 
A. geyeri Gray 
HHH. Pod not mottled, 8—10 mm. long, oblong-linear; corolla ochroleu- 
cous or reddish; perennial. E. 
A. diversifolia Gray 
GROUP 2 
A. Pod hairy. 
B. Pod 2-celled; leaflets 11—25. 
C. Pod ovate, not curved, 4—8 mm. long, 2—4-seeded. 
D. Spike dense; flowers 10 mm. long; peduncles exceeding the leaves. E. 
A. spaldingii Gray 
DD. Spike loose; flowers 6 mm. long; peduncles not exceeding the leaves. E. 
A. lyallii Gray 
CC. Pod lanceolate, curved, 20-——30 mm. long, many-seeded.  E. 
A. malacus Gray 
“BB. Pod 1-celled; leaflets sometimes fewer than 11. ; 
E. Corolla yellow or ochroleucous but sometimes purplish at tip. 

