90 THE GENERA AND THEIR SPECIES. 



narrow, flat, pointed, flaccid, ribs unequal, light green below. 

 Sheaths close, long, striated, uppermost longer than leaf ; ligule 

 lanceolate, torn, decurrent. Panicle loose, much branched, 

 spreading when in flower. Spikelets erect, scattered, numerous ; 

 one floret. Glumes nearly equal, acute, lanceolate, keel toothed, 

 bronzed. Outer palea shorter than glumes, thin, white, ribbed, 

 cleft at apex, having a short rough awn from angle of cleft ; inner 

 palea thin, transparent, notched at apex. 



34. C. striota. Bogs (rare), ranging through the Northern 

 regions of the Northern Hemisphere. June and July. Root 

 perennial, creeping. Stem erect, slender, leafy ; nodes smooth. 

 Leaves rigid, narrow, pointed, rough above, two or three on a 

 stem. Sheaths smooth, striated ; ligule short, slightly notched. 

 Panicle narrow, compact, spreading only when in flower, branches 

 half-whorled, purple. Spikelets crowded, numerous, purplish 

 brown, one floret, hairs longer than florets. Glumes nearly 

 equal, thin, ovate, rough on back. Outer palea as long as glumes, 

 ovate, notched, hairy at base, awned from below middle of back ; 

 inner palea shorter than outer, with a tuft of hairs and a bristle at 

 its base. 



Variety — 

 C. lapponica Hairs shorter than florets. 



35. C. stvigosa. North of Scotland ; an Arctic and northerly 

 species, in many ways resembling No. 34, but more slender in 

 habit. Panicle close ; spikelets large ; glumes lanceolate, folding 

 into a long point ; outer palea shorter than glumes, jagged at 

 apex, an awn rising from below middle of back ; inner palea 

 slender. 



Catabrosa. Plate xxxi. FESTUCEJE. 



9. j. aquatic a 36 in. Whorl Grass. Panicle whorled. 



Pools and slow running streams ; ranging through the Northern 

 Hemisphere. May and June. Root perennial, extensively creep- 

 ing, fibres long, white, glossy, frequently floating. Stem pro- 



