1G8 



KEY TO THE MEXICAN SPECIES OF TURNERA. 



a. Leaves biglandular at base. 



b. Stems herbaceous, rather low, sometimes cespitose; glands borne on the blade; seeds few 



(25 or less). 

 T. palmeri Watson. 

 T. callosa Urb. 



bb. Stems somewhat woody; glands borne on the petiole; seeds 50 or more. 



c. Leaves densely clothed with a yellow, velvety pubescence, and very prominently reined. 



T. velutina Presl. 



cc. Leaves not velvety-pubescent, thin, not strongly veined. 



d. Flowers blue. 



e. Leaves linear. 

 T. ulmifolia Buriiiamensis (Miq.) Urb. 



e. Leaves broader (not linear). 



T. ulmifolia caerulea (DC.) Urb. 



dd. Flowers yellow or white. 

 T. ulmifolia L. 

 T. ulmifolia acuta Urb. 

 T. ulmifolia alba Rose. 



aa. Leaves not biglandular at base. 



o. Annuals; seeds tubereulate. 

 T. pumilea L. 



ee. Perennials; seeds reticulated. 



T. humifusa (Presl) Endl. 

 T. pringlei Rose. 



NOTES ON THE MEXICAN SPECIES OF CLITORIA. 



The genus was monographed by Bentham in the Journal of the Lin- 

 naean Society, 1858, pp. 33-44. 



I have here brought together the Mexican and Central American spe- 

 cies practically in the order treated by Bentham, adding in their proper 

 place the species which have since been discovered. I am strongly 

 inclined to think, although Mr. Bentham reached a different conclusion, 

 that C. mexicana is quite distinct from 0. mariana; but the subject really 

 requires further investigation. [ have never seen mariana from Mexico, 

 but there are specimens in the National Herbarium from southern Ari- 

 zona, and it will naturally be looked for across the border. G. mexicana 

 is restricted to south Mexico and Central America. 



KEY TO THE SPECIES. 



a. Leaflets more than o ; bractlets broad. 



Clitoria ternatea L. Sp. PI. 2 : 753. 1753. 



Tins beautiful little vine was found in cultivation at Rosario, Sinaloa, July 11, 

 1897, by J. N. Rose (No. 1598). 



