AuAMs — The Distribution of Lichens in Ireland. 195 



symbol L 2. In a few cases where a species has been recorded as occurring 

 in a particular province, but where the exact locality where it occurred 

 is not stated with sufficient precision to indicate the sub- province, the 

 symbol x is used. Thus the distribution of a species which is recorded 

 simply from Co. Cork is indicated by the symbol M x, as that county forms 

 part of two sub-provinces. The sub-provinces are as follows : — 



MUNSTER. 



M 1 West Cork and Kerry. 



M 2 Mid-Cork, East Cork, Waterford, South Tipperary. 



M 3 Limerick, Clare, Xorth Tipperary. 



CONNAUGHT. 

 C I Galway. 

 C 2 Mayo. 

 C 3 Sligo, Leitrim, Eoscommon. 



Leinstee. 



L I Wexford, Carlow, Kilkenny. 



L 2 Dublin, Wicklow, Kildare, Queen's County, King's County. 



L 3 Louth, Meath, Westmeath, Longford. 



Ulstee. 



U I Down, Armagh, Monaghan, Cavan. 

 U 2 Antrim, Derry, Tyrone. 

 U 3 Donegal, Fermanagh. 



Each sub-province contains a mountain range 2000 feet or more in height 

 (except L3, where the highest point is 1935 feet), and each includes a 

 considerable length of coast-line. 



Templeton mentions a number of species as occurring "near Belfast." 

 The probability is that in most cases Co. Antrim was meant; and so I have 

 referred all such to the sub-province U3. But the question can only be 

 settled with certainty by further investigation. 



Classification. 



In the list of Families and Genera subjoined I have followed the arrange- 

 ment adopted by Zahlbruckner in Engler and Prantl's " Die Natiirlichen 

 Pflanzenfamilien." For convenience of reference, the species are arranged in 

 alphabetical order under each genus in a separate list, the genera in this list 

 being also in alphabetical order. 



[2 6'=^^ 



