18 



PANICACEiB. 



woody, the second slender, pointed, the 2 inner hyaline, slender 

 included with the jialea, the third empty, the terminal including 

 the pistillate flower. Staminodia 0. Styles joined near the base, 

 much exserted, slender, hispid. Grain enclosed by the hard outer 

 fflume and the internode of the hard racliis, but not adherent. 

 Peduncles straight, erect, solitary or in pairs in the upper axils or 

 often bearing 2-3, rarely 4 to many or only one spike, the staminate 

 portion above with an articulate rachis, the pistillate portion below 

 at length breaking up at maturity, each internode carrying one 

 grain. 



Species 2 or 3, American, allied to Euchlmia and Zea. 



Fig. ^.—Tripsacum dactyloides. A, staminate spikelet, x 2 ; B, pistillate spike- 

 let, X 2. (A, Richardson ; B, after A. Gray, " Man.") 



1. T. dactyloides L. Sp. PL Ed. 2, 1378 (1763). Gama 

 Grass. Sesame Grass. 



Coix dactyloides L. Sp. PI. 972 (1753). T. monodachyum 

 Willd. Hort. Berol. 1. Tab. 1. (1816). T. lanceolatum Rupt., in 

 Benth. PI. Hartw. 247 (1839-57). T. compressum Fourn. in Bull. 

 Soc. Roy. Bot. Belg. 15 : 465. 



Culms stout, 1-2 m. high. Sheaths subcylindrical. keeled; 

 blades scabrous above, 30-60 cm. long, often 2 cm. wide. Spikes 

 often digitate, 2-3 together, rarely single, 10-20 cm. long. Stam- 



