GRASSES OF IOWA. 



59 



hairs throughout spring from small papillae, those on the leaf-blade being 

 confined chiefly to the principal nerves. Panicle diffuse, 3 to 12 inches 

 (6-24 cm.) long, the branches solitary, in pairs, or rarely whorled, the 

 ultimate branches and pedicels strongly hispid. Spikelets 1 line (2 mm.) 



Pig. 41. 



Panicum capillare.—a, b, and c, spike. 

 lets;'?, e, flowering glume. 



long, ovate, acute, or abruptly acuminate-pointed, smooth; first glume 

 clasping the base of the spikelet, obtuse or acute, one to three-nerved, 

 about one-third the length of the iwe to seven-nerved and nearly equal 

 second and third glumes, the acute tips of these are sometimes minutely 

 pubescent; flowering glume smooth and shining, elliptical, obtuse, or 

 subacute, a little shorter than the larger outer glumes. Variable. July 

 to October. 



