46 A Handbook of Nebraska Grasses. 
FIG. PAGE 
4. Lemma hard; seed beaked and protruding be- 
yond the glumes-and -lemmia.. 722. sone 
SE ee ate hes eoe Diarrhena diandra 66 84 
4. Lemma soft; seed not beaked nor protruding. .5 66 
Figure 66. 

Diarrhena diandra. 5. 
». Lateral nerves:or the lenmmachairy.2). 1. ee 
ACT DESL SERA RN Ee nee Triplasis purpurea 67 4 
». Lateral nerves of the lemma smooth.......... 62 67 AT 
Figure 67. 

Triplasis purpurea. 6. 
