648 CRYPTOGAMIA FILICES. 



)(ilujlre 3. EQUISETUM caule angulato, frondibus fimpll- 

 cibus, Sp. pi 1 51 6. (Gcr.em. 1114./. 4) 



Marlh Horfe-tail. Mglis. Paddock-pipe. Scoiis. 



In ditches and wet foils frequent. "U. VI. 



The ftalk is about a cubit high, nearly fmooth, 

 and channelled with five or fix deep furrows. 

 The vagina at the joints of the flalk arc divided 

 into {cwtn or eight acute, black dents, with 

 white edges. The leaves are fimple and un- 

 branched, nearly creel, and grow about eight in 

 , a whirl. The fpikes of flowers terminate the 

 ftalks, and are black before they difperfe their 

 ydlen. 

 ^' A variety of this fometjmes occurs, in which the 

 leaves or branches which compofe the whirls 

 are many of them terminated with fmall black 

 oval [fpikes, as figured in Rafs Synaps. i^i- t, 



B-f'3' 

 This is not fo rough as the preceding, but is alfo 

 prejudicial to cattle. 



m/um 4. EQUISETUM caule fubnudo Isevi. Sp.pl. 1517. 

 (Rail Synops. p, 131, /. 5./. 2.; 

 Smooth naked Horfe-tail. AngHs, 

 Jn lakes and ditches frequent. 1;. V. VI. 

 This grows three or four feet high, and is often 

 quite deftitutc of leaves, but fomctimes pro-' 

 duces here^one or two ftraggling ones. The 

 {talk is fmooth, channelled with twelve or more 



furrows. 



i 



