92 
Pods lunate, transversely wrinkled and roughened ; 
leaflets filiform-linear. 4. P. Lupinellus. 
Pods ovate-oblong, wrinkled ; leaflets and spikes sessile or nearly so. 
5. £. bracteata. 
Pods ovoid or ovate. 
Pods with an abrupt short beak. 
Leaflets small, flowers few, loosely scattered on slender elon- 
gated racemes. 6. P. tenuiflora. 
Leaflets oblong-obovate, flowers several together in inter- 
rupted spikes or racemes. 7. P. obtusiloba 
Leaflets oblong, flowers many in crowded elongated spikes 
or racemes. 8. P. floribunda. 
Pods with a slender elongated beak. 
Leaflets linear, flowers slender-pedicelled in loose elongated 
racemes, 9. P. linearifolia. 
Leaflets linear-lanceolate, plant silvery canescent; calyx 
inflated in fruit. 10. P. digitata. 
Leaflets oblong, plant silvery or woolly-canescent through- a 
out; calyx not inflated in fruit. ' 
rt, P. argophylila. 
Flowers large (1-2 cm.). 
_ Calyx gibbous on the upper side. 
Bracts broadly ovate (or in P. canescens often lanceolate-ovate). 
Bracts as long as the calyx and enclosing it. 
12. P. Reverchoni. 
Bracts barely longer than the pedicel; leaflets lanceolate-linear. 
ay, oF cyphocalyx. 
Bracts as long as or somewhat shorter than the pedicel ; leaflets obo- 
vate, sparingly canescent or glabrous. 
14. PB. canescens. 
Bracts lanceolate-ovate, attenuate, as long as the calyx lobes 5 
lets oblong. 15. P. cuspidata. 
Plants low, spreading, acaulescent or apparently so. 
Flowers small (5 mm.). 
Leaflets small, pod globose, with a long attenuate beak. s 
16. B. pentane # 
leaf- 
Flowers large (1-2 cm.) and roots fusiform tuberous. 
Hirsute with weak spreading or appressed white hairs. 
Leaflets oblong-cuneate. 17. P. esculenta. 
Leaflets linear-oblong. 18. P. hypog@a. 
Stems hirsute ; leaflets glabrous, except the ciliate margins. 
19. P. subacaulis. 
Hirsute with more or less rigid, appressed or spreading pubescence 
Bracts large, scarious, deciduous, as long as the calyx. « ce 
20. P. Californica- 
Bracts much smaller than the calyx, the lower lobe of whic 
broadly ovate or spatulate. ar. P, castorea 
