65 
CATABROSA AQUATICA. 
Beavvots. Hooxrer anp Arnorr. Parnety. LInp ey. 
PLATE XIX. 
Aira aquatica, Linnevs. J. E. Smirx. Hooxerr. 
“ ce Wirnerinc. Hour. Srernorp. 
“ ce RetuHan. Hooxer. Asszor. 
“ “ Curtis. Kwnapr. Enrnart. 
« - WILLDENow. ScurapEr. Host. 
“ es OxErpDER. GREVILLE. 
Poa dulcis, SALIsBuRY. 
The Water Whorl-Grass. 
Catabrosa—A Gnawing. Aquatica—W ater. 
CataBRosaA. Beauvois.—Catabrosa or Whorl-Grass, has a_ spreading 
panicle with awnless florets. The name is derived from the Greek, and 
signifies @ gnawing, on account of the extremity of the glumes being erose. 
Catabrosa aquatica is the only British species. 
A soLp handsome species, growing in ditches, banks of rivers, 
and other wet situations, rendering it a useless agricultural Grass, 
although cattle are very fond of it. 
A common Grass in England, Scotland, and Ireland. Abroad 
it is a native of France, Italy, Germany, Sweden, Norway, 
Lapland, and in the North of South America. 
Root perennial, extremely long, branched, creeping, or 
frequently floating on the water, and having lengthy shining 
white fibres. Stem strong, circular, and smooth, the basal 
portion procumbent and floating in the water, the upper 
portion rising from twelve to eighteen inches above the water, 
bearing three or four broadly-linear leaves, having striated, 
M 
