Piper — Andropogon halepensis and Andropogon sorghum. 43 



Sokoto, Northern Nigeria, Dr. J. M. Dalziel No. 518, the native name 

 "Kerama" (Kew); Senegal, Roger in 1823 (Kew). 



Specimens collected at Kouroussa, French Guinea, M. Pobequin No. 

 589, Dec, 1900 (Kew) are very similar, but the panicle is secund droop- 

 ing and the spikelets black at maturity. It is perhaps a cultivated 

 variety as it is labelled " Mil sauvage." 



Hackel mentions typical specimens from Nupe on the Niger, collected 

 by Barter. He also cites cultivated specimens from Dahomey, Mexico 

 and Carolina. There are specimens in the U. S. National Herbarium 

 from Yucatan and Guatemala. 



The plant is apparently confined to the general region of the Niger, 

 and perhaps is net a really feral form, but one modified by cultivation. 

 At any rate, it is more closely similar to some cultivated varieties than 

 any undoubted wild form as yet known. 



