234 BULLETIN 112, U. S. DEPARTMENT OF AGRICULTURE. 
depression a tuft of woolly hairs, the palea concave below, gibbous 
above, the apex often free at maturity. 
F:g. 141. — Panicum geminatum. Plant, X J ; two views of spikelet and fertile floret 
. X 10. 
Large branching perennials, with woody culms often clambering 
several feet high into shrubs or trees, the blades firm, flat, usually 
