186 BULLETIN 112, IT. S. DEPARTMENT OF AGRICULTURE . 
glumes narrow, acuminate, 1-nerved, usually longer than the floret; 
lemmas narrow, 3-nerved, the lateral nerves near the margin, the 
Fig. 110. — Toothache grass, Campulosus aromaticus. Plant, x 1 ; spikelet and fertile 
floret (palea side up), X 5. 
apex minutely bifid, bearing between the teeth a slender awn, or 
rarely awnless. 
