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Pyrola rotundifolia was included in How's "Phytologia Bri-- 

 tannica" so long ago as 1660, as having been found by Mr. Heaton in 

 a bog by Eoscrea, in the King's County, a locality not yet verified, 

 but which may prove correct, though in all other instances, except at 

 Multyfarnham, we have satisfied ourselves that either P. media or 

 P. minor have been gathered in the alleged Irish localities for P. ro- 



Nativea, hut doubtful as species 3. 



Thalictrum Kochii Epilobium tetragonum (verum.) 



Potamogeton Lonchites. 



The first two are critical plants, and would no doubt be classed as 

 varieties by a great many botanists. Potamogeton Lonohites (Tuck) is 

 a new name applied by Dr. Boswell Syme to the Potamogeton from 

 the River Boyne, which we referred doubtfully to P. heterophyllus ; 

 and if correctly identified with the American species, this is one more 

 American plant occurring in Ireland, though found nowhere else in 

 Europe: but it is difficult to feel quite sure, when dealing with a genus 

 of plants so variable and so little understood as the Potamogetones. 



Plants prohably introduced, 3. 



Erysimum cheiranthoides. Mentha sylvestris. 



Tamus communis. 



The first two have already been admitted in the works of Mackay 

 and others ; but we now for the first time are able to give satisfactory 

 localities. It is surmised that Tamus communis was planted at Hazle- 

 wood by the late Mr. Wynne. 



Plants certainly introduced, 



But well established in the wild state, 3 : — 



Acorus Calamus. Hippophae rhamnoides. 



Cuscuta Trifolii ("Colonist,") 



the first two having been planted, the last accidentally sown when 

 mixed with agricultural seeds. Though planted at Courtown, it is 

 barely possible that Sippophae may be native on the sandhills further 

 south, according to what we hear from Mr. J. Morrison. 



Casuals. 



That is, plants certainly introduced by man, and which cannot be 

 considered permaiient additions to the Flora, being waifs and strays 



