PLATE XVIII. 



Panicum andrewsi, Rendle, sp.n. (p. 192.) 



Fig. 1. Barren glume, i, viewed from inside. 



Fig. 2. Barren glume, ii, viewed from inside. 



Fig. 3. Barren glume, iii, viewed from inside and showing the empty 

 pale. 



Fig. 4. Fertile glume. Dorsal view. 



Natural size. Figs. 1-4, parts of spikelet, x 18. 



