64B CRYPTOGAMIA FILICES, 



^^aluftrc .j. EqUISETUM caule angiilato, frondibus limpll- 

 c:biis. Sp.pl 1516. ('CrV. (?;/7. 1 114./. 4) 

 Marfli riorfe-tail. ylnglis. Paddock-pipe. Scotis. 

 Jn ditches and wet foils fiequent. "U. VI. 

 The flalk is about a cubit high, nearly fmooth, 

 and channelled with five or fix deep furrows. 

 I'lie I'^o?;/.? at the joints of the fialk arc divided 

 into (even or eiglit acute, black dents, with 

 I Avhite edges. The leaves are fimple and un- 



branched, neasly erec% and grow about eight in 

 a whirl. 1 he fpikes of flowers terminate the 

 ftalks, and are black before they difperfe their 

 Vollev. 

 .^■* A variety of this fometimes occurs, in which the 

 .. . leaves or branches which compofe the whirls 



are many of them terminated with Imall black 

 oval ^fpikes, as figured m R^fs Syfwps. 131./. 



5-f'3- 

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

 prejudicial to cattle. 



« 



'U;;:ofum 4. EQUISETUM caule fubnudo Isevi. Sp.pl. 151 7. 

 {Rait Synops. p. 131, /. 5./. 2.) 

 Smooth naked Horfe-tail. AngJis, 

 In lakes and ditches frequent. % V. VI. 

 This grows three or four reet high, and is ofccn 

 quite deftitutc of leaves, but lometnncs pro- 

 • duces here one or tvv'o draggling ones. The 

 ,. iialk is fmooth, channelled with twelve or more 



furrows. 



