Penxell: Plants of southern United States 



341 



curved hairs. Legumes pubescent 

 with relatively short and appressed 

 hairs. Leaflets 6-12 (-15) pairs. 

 Corolla 25-30 mm. wide. 

 Pedicelt, and stems hirsute with 

 spreading hairs. Legumes pu- 

 bescent with spreading hairs. 

 Leaflets 9-18 pairs, 15-20 mm. 

 long. Corolla mostly 30-40 mm. 

 wide. Stems stout, erect. 

 Leaflets 6-10 pairs, 8-12 mm. long. 

 Corolla about 25 mm. wide. 

 Stems slender, spreading. 

 Leaflets pubescent with incurved hairs. 



Anther-sacs yellow. Legumes 3-5 cm. 

 long, 5 mm. wide. Plants relatively 

 small-leaved, slender and spreading. 

 Pedicels and legumes pubescent with in- 

 curved hairs. 

 Pedicels and legumes pubescent with 

 spreading hairs. 

 Anther-sacs purple. Legumes 5-6 cm. 

 long, 4-5 mm. wide. Plant relatively 

 large-leaved, stouter and erect. 

 Corolla small, less than i cm. in diameter; one petal much 

 larger than the remaining four. Stamens 5-9. 

 Pedicels i-2(-3), 2-5 mm. long. Annuals. 

 Legumes 3-4 mm. wide, 10- to i8-seeded. Leaflets 

 long-ciliate. Odd petal not twice length of others. 

 Legumes 4-6 mm. wide, 6- to 9-seeded. Leaflets not 

 ciliate. 

 Petiolar gland with discoid head much wider than 

 stalk-like base. Corolla with odd petal 

 twice exceeding others. Legumes 7- to 9- 

 seeded, pubescent with incurved (rarely 

 spreading) hairs. Stem pubescent with 

 ascending-incurved, rarely with spreading 

 hairs. 

 Leaflets glabrous, obtuse, mucronate. Sepals 

 puberulent on midrib. Stipules 5-8 mm. 

 long. 

 Leaflets 9-18 pairs, 2-4 mm. wide. 

 Leaflets 15-26 pairs, 1-2 mm. wide. 

 Leaflets pubescent with incurved hairs, acutish 

 to acute, more conspicuously mucronate- 

 tipped. Sepals pubescent on midrib. Stip- 

 ules 8-10 mm. long. 

 Petiolar gland with head but slightly wider than 

 stalk-like base. Corolla with odd petal less 



8. C. fasciculata. 



8a. C. fasciculata /3. 



?>b. C. fasciculata 7. 



ga 



C. mississippiensis. 

 C. mississippiensis j8. 



10. C. puberula. 



II. C. leptadenia. 



12. 

 12a. 



C. nictitatis. 

 C. nictilans /3. 



12b. C. nictitans y. 



