65 



CATABROSA AQUATICA. 



Beauvois. Hookee and Abnott. Paenell. Lindlet. 



PLATE XIX. 



Aira aquatica, 



Poa dulcis, 



LiNN^TTS. J. E. Smith. Hookee. 

 WiTHBEiNa. Hull. Sibthoep. 

 Kelhan. Hooebe. Abbot. 

 Ctjetis. Knapp. Ehehaet. 



WlLLDBNOW. SCHEAD^E. HoST. 



Oedee. Gbevillb. 

 Salisbtjey. 



The Water Whorl-Grass. 



Catahrosa — A G-nawing. 



Aquatica — Water. 



Catabeosa. Beauvois. — Catahrosa or Wliorl-Grrass, has a spreading 

 panicle with, awnless florets. Tke name is derived from the Greek, and 

 signifies a gnaming, on account of the extremity of the glumes being erose. 



Catahrosa aquatica is the only British species. 



A BOLD 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. 



Koot 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 



