340 



Pennell: Plants of southern United States 



glabrous, reddish beneath. Pedicels 30-40 

 mm. long. Sepals ovate. Legumes 30-40 

 mm. long, finely appressed-puberulent. 

 Leaflets 8-1 1 mm. long, acute-mucronate, cili- 

 ate, green beneath. Pedicels 7-9 mm. long. 

 Sepals lanceolate-attenuate. Legumes 35-40 

 mm. long, strigose. 

 Petiolar gland sessile. 



Pedicel i, 25-35 mm. long, exceeding the 

 leaves. Sepals ovate. Stipules ovate. 

 Leaflets strongly ridge-veined. 

 Pedicels 1-4, 15-25 mm. long, shorter than the 

 leaves. Sepals lanceolate. Stipules 

 lanceolate-linear. Leaflets not stronglj^ 

 ridge-veined. 

 Leaflets 4-7 pairs, not ridge-veined, pubes- 

 cent. Petiolar gland small. Pedicels 

 spreading-pubescent. Legumes 3.5-4 

 cm. long, pubescent. 

 Leaflets 12-20 pairs, finely ridge-veined, 

 glabrous. Petiolar glands large, 1-2 mm. 

 long. Pedicels glabrous to finely ap- 

 pressed-puberulent. Legumes 6.5-8.5 

 cm. long, sparsely finely appressed- 

 puberulent. 

 Annuals. 



Petiolar gland depressed, 1-2.5 mm. wide. Pedi- 

 cels glabrous to more rarely puberulent in lines. 

 Leaflets 10-25 pairs. 

 Petiolar gland not depressed, 0.07-1.5 mm. wide. 

 Pedicels puberulent to hirsute. Leaflets 

 6-1 2 (-18) pairs. Species closely related 

 and more or less intergrading. 

 Leaflets glabrous (occasionally slightly puberu- 

 lent in C. fasciculala). Legumes 3-7 

 cm. long, 5-7 mm. wide. 

 Anther-sacs purple. Petiolar gland mi- 

 nute, 0.07-0.2 mm. wide. Leaflets 5-9 

 pairs. Buds ovate, acute to short-acu- 

 minate. Legume relatively long-beaked. 

 Pedicels appressed-pubescent. Plant 

 low. 

 Anther-sacs yellow (rarely purplish in C. 

 fasciculala). Petiolar gland 0.5-1.5 

 mm. wide. Leaflets 6-i2(-i8) pairs. 

 Buds lanceolate to ovate-lanceolate, 

 strongly acuminate. Legumes rela- 

 tively short-beaked. 

 Pedicels and stems pubescent with in- 



I. C. Wrighlii. 



2. C. aristellala. 



3. C. iexana. 



4. C. keyensis. 



5. C. Deeringiana. 



6. C. brachiala. 



7. C rostrata. 



