STANDLEY TREES AND SHRUBS OF MEXICO. 471 



Fruit strigillose on the edges; leaflets 1.5 to 2.5 cm. long. 



10. C. cuemavacana. 

 Pubescence of the stems spreading or reflexed. 

 Leaflets 5 to 9 or rarely 11, 1.4 to 2.5 cm. wide. 



Leaflets obtuse, glabrate beneath 11. C. tepicana. 



Leaflets acute, densely pilose beneath . 12. C. langlassei. 



Leaflets more than 9 in all or most of the leaves, usually much more 

 numerous, commonly less than 1.4 cm. wide. 

 Keel of the corolla about 1 cm. long. Leaflets 0.8 to 1.5 cm. long, 



glabrous on the upper surface 13. C. seemanni. 



Keel of the corolla much more than 1 cm. long. 



Leaflets 0.6 to 1.2 cm. long 22. C. pringlei. 



Leaflets 1.5 to 4 cm. long or longer. 

 Pubescence of the stems brown ; leaflets acute, 3.5 cm. long. 



14. C. subnxontana. 

 Pubescence of the stems white to yellow ; leaflets obtuse, or if 

 acute less than 3.5 cm. long. 

 Fruit 6 to 7 mm. wide, thick, densely long-pilose. 



15. C. talpa. 

 Fruit 3 to 5 mm. wide, flat, short-pilose or sericeous. 



Corolla 2.5 to 3 cm. long 16. C. macrantha. 



Corolla 2 cm. long or shorter. 



Leaflets small, 1.5 to 2.6 cm. long 17. C. leucantha. 



Leaflets large, most of them 3 to 5 cm. long or longer. 



Calyx lobes subulate-attenuate 18. C. toxicaria. 



Calyx lobes triangular or oblong, acute or subobtuse. 



19. C. schiedeana. 

 AA. Leaflets acute or euneate at base. 



Pubescence of the stems spreading or ascending, never closely appressed. 

 Leaflets broadest near the apex. 



Flowers about 2 cm. long; leaflets 3 to 8 cm. long, glabrous on the 



upper surface 20. C. nitens. 



Flowers 8 to 12 mm. long ; leaflets 6 to 20 mm. long, usually sericeous 



on the upper surface 21. C. cinerea. 



Leaflets broadest at or near the middle. 



Flowers 2 cm. long 22. C. pringlei. 



Flowers less than 1 cm. long. 

 Leaflets appressed-pilose on the upper surface__23. C. brandegei. 



Leaflets glabrous on the upper surface 24. C. vicioides. 



Pubescence of the stems closely appressed. 



Fruit glabrous 9- C. leiocarpa. 



Fruit sericeous or strigillose. 



Leaflets oblanceolate or obovate, broadest near the apex. 



21. C. cinerea. 

 Leaflets linear to linear-oblong, broadest at the middle. 



Flowers 5 to 7 mm. long 25. C. purpurea. 



Flowers 11 to 18 mm. long 26. C. palmeri. 



1. Cracca lanata (Mart. & Gal.) Kuntze, Rev. Gen. PI. 1: 175. 1891. 

 Tephrosia lanata Mart. & Gal. Bull. Acad. Brux. 10^ 48. 1843. 

 Tephrosia crassifoUa Benth. Bot. Voy. Sulph. 80. 1844. 

 Cracca crassifoUa Kuntze, Rev. Gen. PI. 1: 174. 1891. 

 Veracruz to Tepic and Guerrero ; type from Zacuapan, Veracruz. 



55268—22 20 



