65 ] 



VII. 



CENSUS REPORT ON THE MOSSES OF IRELAND. 



By HENRY WILLIAM LETT, M.A., M.R.I. A. 



[Being the twelfth Report from the Fauna and Flora Committee.] 



Read April 27, 19H. Published Septemhek 16, 191-5. 



INTRODUCTION. 



The Divisions of Ireland adopted in R. LI. Praeger's 

 Botany " are used throughout this report, viz. : — 



Irish Topographical 



1. 



Kerry South 



11. 



Kilkenny 



21. 



Dublin 



31. 



Louth 



2. 



Kerry North 



12. 



Wexford 



22. 



Meath 



32. 



Monaghan 



3. 



Cork West 



13. 



Garlow 



23. 



Westmeath 



33. 



Fermanagh 



4. 



Cork Mid. 



14. 



Queen's Co. 



24. 



Longford 



34. 



Donegal E. 



5. 



Cork East 



15. 



Galway S.E. 



25. 



Roscommon 



35. 



Donegal W. 



6. 



Waterford 



10. 



Galway West 



26. 



Mayo East 



36. 



Tyrone 



7. 



Tipperary S. 



17. 



Galway N.E. 



27. 



Mayo West 



37. 



Armagh 



8. 



Limerick 



18. 



King's Co. 



28. 



Sligo 



38. 



Down 



9. 



Clare 



19. 



Kildare 



29. 



Leitrim 



39. 



Antrim 



10. 



Tipperary N. . 



20. 



Wicklow 



30. 



Cavan 



40. 



Londonderry 



The- nomenclature which I have used is that of Dr. Braithwaite's 

 " British Moss Flora," and his " Sphagnaeese of Europe and North America," 

 except in the case of some few plants which were not known to that author, 

 and have been described by more recent authors. 



For each species there is given so far as has been possible the earliest 

 and the latest known records, except in the case of eighty-six common mosses 

 which occur almost everywhere. 



There are certain records to which is joined the name of David Orr, 

 the actual specimens of which exist in several herbaria, but on which 

 doubt has been cast ; and as they have not since been found, though carefully 

 searched for, I have enclosed these records in square brackets with a note 

 of interrogation attached to each. A few records of some other mosses 

 will be found similarly marked, as it was not found possible to verify them. 



S.I.A. PEOC, VOL. XXXII., SECT. B. [L] 



