450 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Corolla lobes ovate-triangular to orbicular, never with 
linear tips. 
Calyx lobes broadly rounded at the apex, united 
for nearly half their length_-._-__.----_------ 18. C. scandens. 
Calyx lobes acute to attenuate, united only at the 
base. 
Corolla lobes ovate to triangular, acute or acumi- 
nate. a 
Calvx shorter than the corolla tube; corolla " 
5 cm. long or more, yellow__-_-----~~- 8. C. lutea. 
Calyx longer than the corolla tube; corolla 
4 em. long or less, yellowish green. 
Stems and calyx glabrous; leaflets 
acute, bright green____-___--_--- 6. C. viorna, 
Stems densely villous about the nodes; 
calyx lobes villous-ciliate; leaf- 
lets obtuse, glaucescent_____-__~- 7. C. villosa, 
Corolla lobes suborbicular to rounded-ovate, 
rounded to obtuse at the apex. 
Peduncles shorter than the leaves; leaflets 
- 4 em. long or less__-_--_------------- 11. C. minor. 
Pedunecles longer than the leaves; leaflets 
usually 5 to 10 cm. long. 
Lowest pair of leaflets much reduced, 
stipule-like__--_----------------- 17. C. stipularis. 
Lowest pair of leaflets similar in size 
and form to the others. 
Corolla 4 cm. long or less. 
Calyx lobes half as long as the 
corolla, hirsute; leaflets 
obovate-oblong _.________ 10. C. campanulata. 
Calyx lobes more than half as 
long as the corolla, gla- 
brous; leaflets oblong_-_-- 9. @. trijlora 
Corolla 5 to 7 cm. long. (Calyx 
lobes half as long as the co- 
rolla, or often much shorter.) 
Lowest leaflets more or less au- 
riculate, constricted above 
the base; calyx lobes gla- 
brous. 
Calyx lobes broadly oblong- 
ovate, 13 to 15 mm. wide; 
corolla 6 cm. long, the tube 
campanulate; peduncles sol- 
itary; leaflets acute or 
acuminate ~--------_--_-- 15. C. biaurita. 
Calyx lobes lanceolate or ovate- 
lanceolate, 8 to 11 mm. 
wide; corolla 7 cm. long, the 
tube obconic, tapering to the 
base; peduncles 2 together 
or 2-flowered; leaflets ob- 
tuse 16. Q. pringleéi. 
