256 



GRASSES OF IOWA. 



cm.) long, the equal, primary branches in pairs; pedicels shorter than 

 the spikelets. Spikelets lanceolate, live to nine-flowered, 2 to 3 lines 

 (4-b mm.) long; flowering glumes about 1 1 lines (3 mm.) long, ob- 

 scurely five-nerved, with narrow, scarious margins, the keel and lateral 



Fkj. 177. Poa Chapmaniana—BL, b, spikelets; 



c, flowering glomes. (Div. Agros. U. S. Dipt. 

 Agri. ) 



Fig. 178. l'"n corapressa—a, spikelets; b, 

 flowering glumes, e, cross section of culm; d, section 

 of leaf. (Div. Agros. U. S. Dept. Agrl.i 



nerves smooth, or silky haired below. Palea two-nerved, nerves scabrous. 

 Dr) meadows and waste places. June to September. 



Poa cojnpressa is extensively naturalized in most parts of Iowa. 



ill!', eastern, central, southern and northeastern Iowa. A valuable 

 forage plant, yielding, however, less than bluegrass. 



