GRAMINE^E 191 



alpine pastures, frequent. P. cenisia, All. (pattens. Gaud.); 

 panicle spreading, spikelets greenish-yellow ; alpine pas- 

 tures, frequent. 



D. Similar ; but stolons short or o ; branches of panicle 

 smooth : P. annua, L. ; Meadow Grass ; everywhere. 

 P. minor, Gaud. ; branches of panicle capillary, stem 2-6 

 in. ; alpine pastures, frequent. P. laxa, Haenk. ; spike- 

 lets few-flowered, stem 3-6 in. ; alpine pastures, frequent. 

 P. pumila, Host. ; panicle erect, leaves setaceous, con- 

 volute ; Carinthia, Carniola, very rare. P. supina, 

 Schrad., appears to be a mountain form of annua. 



E. Similar ; but branches of panicle rough : P. tri- 

 vialis, L. ; meadows, common. P. palustris, L. (serotina, 

 Ehrh.) ; leaf-sheaths smooth ; damp meadows. P. nemo- 

 ralis, L. ; woods, common. P. ccesia, Sm. ; plant bluish- 

 green, ligules covering the nodes ; alpine rocks, local. 



35. GLYCERIA, A. Br. 



Spikelets many-flowered ; flowering glumes convex, 

 obtuse, not awned. Aquatic grasses. 



The English species; G. aquatica, Sm., with greatly 

 branched panicles ; fluitans, Br. (including plicata, Fr.), 

 with nearly simple panicle ; and distans, Whlb., with 

 very long and slender panicle; all in wet places, the 

 last local. 



36. FESTUCA, L. 



Spikelets 3- or more-flowered, in spikes or panicles; 

 flowering glumes convex, acute, or awned at the tip; 

 ovary usually glabrous. 



The following British species of Fescue Grass occur 

 also in the lowlands of Switzerland : F. pratensis, Huds., 



