STANDLEY TREES AND SHRUBS OF MEXICO. 415 



Blades of the petals 2.5 mm. wide or narrower. 



19. B. subrotundifolia. 

 Blades of the petals nearly 1 cm. wide. 

 Leaves 9-nerved, lobed halfway to the base, 5 cm. wide or nar- 

 rower 12. B. macranthera. 



Leaves 7-nerved, lobed less than halfway to the middle, 6 to 



8 cm. wide 13. B. retifolia. 



Petals glabrous or nearly so. 

 Leaves glabrous. 



Leaves 5 to 10 cm. long, all deeply bilobate. 



20. B. unilateralis. 

 Leaves 10 to 22 cm. long, shallowly bilobate, or some of them 



often entire 21. B. pansamalana. 



Leaves pubescent. 



Leaves green beneath, almost concolorous, with numerous small 

 glands, the lobes usually acute or acuminate. 



22. B. mexicana. 

 Leaves pale beneath, nearly or wholly without glands. 



Pubescence of the lower surface of the leaves, between 



the veins, of closely appressed hairs. 



Leaves large, usually 5 to 8 cm. long, deeply lobed, the 



lobes divaricate, usually pointed__23. B. dlvaracata. 



Leaves small, 1.5 to 5.5 cm. long, shallow lobed, the lobes 



not divaricate, rounded 24. B. spathacea. 



Pubescence of the lower surface of the leaves of soft spread- 

 ing hairs. 



Petals purplish 25. B. schlechtendaliana. 



Petals white 26. B. latifolia. 



1. Bauhinia leptopetala DC. Prodr. 2: 513. 1825. 



Described from Mexico. Known to the writer only from Mocino and Sesse's 

 plate.* 



Leaves cordate at base, glabrous ; flowers greenish, the petals linear, acute. 



2. Bauhinia long'iflora Rose, Contr. U. S, Nat. Herb. 10: 97. 1906. 

 Bauhinia chlorantha T. S. Brandeg. Zoe 5: 200. 1905. 



Sinaloa to Guerrero ; type from Imala, Siualoa. 



Spreading shrub or tree, 3 to 9 meters high, armed with short stout spines ; 

 leaves 2.5 to 6 cm. wide, green, sparsely pubescent beneath ; flowers large, 

 greenish ; fi'uit 15 to 20 cm. long, 1 to 1.5 cm. wide, borne on a very long 

 slender stipe. 



Perhaps not different from B. pauletia Pers. {Pauletia aculeata Cav.), a 

 species described from Panama. 



3. Bauhinia heterophy^lla Kunth, Miraos. PL L§gum. 46. 1919-24. 



Yucatan. West Indies and northern South America ; type from Venezuela. 

 Scandent shrub, 8 to 4.5 meters high. 



4. Bauhinia g'labra Jacq. Stirp. Amer. 119. pi. 113, f. 3. 1763. 



Yucatan ; Colima ; reported from Veracruz. Central America and northern 

 South America ; type from Cartagena, Colombia. 



Scandent shrub ; leaves 5 to 7.5 cm. long, long-petiolate, the lobes obtuse, 

 thinly brown-sericeous beneath; fruit 5 to 7 cm. long, nearly 2 cm. wide, 1 

 or 2-seeded, very thin, brown-sericeous. 



The Mexican plant may be specifically distinct. 



'DC. Calq. Dess. Fl. Mex. pi. 223. 



