302 BOTANICAL GAZETTE [april 



Panicum distantiflorum Rich. To this species was referred Panicum 

 utowanaeum Scribn. (P. Sintenisii Nash), which proves to be a 

 distinct species. It is represented by two specimens from Tris- 

 cornia, near Habana, Hitchcock 141 and Tracy 9089. 



Panicum divaricatum L. = Lasiacis divartcata (L.) Hitchc. 



Panicum Grisebachii Nash = Lasiacis Grisebachii (Nash). 



Panicum hirtivaginum Hitchc. This species appears to be the same as 

 P. Ghieshreghtii Fourn. of Mexico. 



Panicum laxum Sw. To this was referred P. polygonatum Schrad. which, 

 however, proves to be distinct, and is easily recognized by its 

 pubescent nodes, and by the lack of the swollen sterile palea which 

 characterizes P. laxum and P. pilosum. 



Panicum numidianum Lam. This species appears to be confined to 

 the North African area and, though not well known, is sufficiently 

 distinct from P. harhinode Trin. of Cuba and tropical America. 



Panicum Rugellii Griseb. = Lasiacis Rugellii (Griseb.). 



Panicum Sellovii Nees. An earlier name is P. millegrana Poir. 



Panicum Sloanei Griseb. = Lasiacis Sloanei (Griseb.). 



Panicum Swartzianum Hitchc — Lasiacis Swartziana (Hitchc). 



To these may be added the following two corrections in genera allied 



to Panicum'. 



Mesosetum roUhoellioides (H. B. K.) Hitchc. A comparison of the type 

 specimens shows that the Cuban species is Mesosetum loliiforme 

 (Hochst.) Chase {Panicum loliiforme Hochst.^). 



Hymenachne auriculata (Willd.) Chase. The specimen mentioned, 

 Wright 3863 in part, is H. patula Fourn.^ — A. S. Hitchcock, U.S. 



Department of Agriculture, Washington, D.C. 



sSteud. Syn. PI. Glum. 1:56. 1854. 

 6Mex. PI. 2:37. 1886. 



