GRASS FAMILY 



577 



blunt ligules ; panicle 2 — 6 in. long, spreading, with slender 

 branches 3 — 5 together ; spikelets ovate, 3 — 4-flowered, much 

 webbed ; flowering glumes with 5 prominent veins, 3 hairy. — 

 Meadows; abundant. — Fl. June, July. Perennial. 



12. P. palustris (Marsh Meadow-grass). — Without runners; 

 leaves with longer and more conspicuous ligules than the preced- 



p6a prat£nsis (Smooth Meadoiv-grass). 



ing ; -flowering glumes indistinctly veined. — Marshes by the Tay 

 below Perth, and by the Severn. — Fl. July. Perennial. 



13. P. irividlis (Rough Meadow-grass). — Chiefly distinguished 

 from P. pratensis by the absence of runners ; a general roughness 

 of surface ; long, acute ligules ; more slefider panicles, often 6 in. 

 long, with slender, spreading branches given off 5 together ; spikelets 

 usually 2-flowered, rarely 1 or 3 — 5 ; flowering glume 5-veined, 

 marginal veins glabrous. — Moist places; abundant. — Fl. June, 

 July. Perennial. 



