DIOSCOREACEAE. 



DIOSCOREA Linn. 



Dioscorea cayennensis Lam. Enc. III. 323. 



Upper Gonini River : Verstkeg 152 ^ (fl. Aug.) 

 French Guyana, Northern Brazil. 



Dioscorea amazonum Mart. Mss. ex Griseb. Flora Bras. III. 1. p. 39. 

 Upper Tapanahoni River: Versteeg 913 rf (fl. Octob.). 

 Para River, near Plant, la Prospdrite: Focke 1020 (fl. Sept.). 

 Surinam : Hostmann 883 in Hb. Rheno Traj. named by Miquel : Dios- 

 corea surinamensis Miq. and by Kunth : Dioscorea elegantula Kth- 

 Enum V. p. 366. 

 Northern Brazil. 



Dioscorea polygonoides H. B. K. Nov. Gen. et Spec. I. 274. 



Paramaribo: Focke 781 $ (fl. April). 



Paramaribo, near Plant. Quarta : Kegel 442 and 958 2 named : Dios- 

 corea Kegeliana Grisebach Linnaea XXI. p. 279. 



Surinam: Hostmann 906 in Herb. Rheno Traj. and in H. L. B. 903, 

 322—81. 



Northern Brazil, Guyana. 



Dioscorea trifida Linn. f. Suppl. 427. 



Upper Tapanahoni River, near Drie Tabbetje : Versteeg 695 Q (A. 

 July). 



Paramaribo: Focke 1109 $ (fl. May). 



Paramaribo , near plant. Quarta : Kegel 903 (fl. June) ; Hostmann Hb. 

 Rheno-Traj. 767 ; Hostmann H. L. B, 903, 322 — 327 ; Focke 618, 

 named : Dioscorea truncata Miq. Linnaea XVIII p. 23 ; Hostmann 

 555 = Dioscorea affinis Kunth Enum V. p. 372. 



Cultivated in the colony. Vernacular name : »Napi". 



Guyana. 



