132 Scientific Proceedings, Royal Dublin Society. 



The following are additions to the Flora of the Districts in 

 which they occur, as given in the " Cyhele Hiberniea " and its 

 supplement : — 



Sinapis nigra (Linn.) — District 4. 

 Baphanus maritimus (Sm.) — District 2. 

 Lavatera arbor ea (Sm.) — District 4. 

 Radiola millegrana (Sm.) — District 4. 

 JRuhus ccBsius (Linn.) — District 4. 

 Rubia peregrina (Linn.)— District 4. 

 Inula crithmoides (Linn.) — District 4. 

 Garduus nutans (Linn,)— District 4. 

 Helminthia echioides (G*oert.) District 4. 

 Orobanche minor (Linn.) — District 4. 

 Chenopodium rubrum (Linn.) — District 4. 

 Obione portulacoides (Moq.) — District 4. 

 Rumex maritimus (Linn.) — District 4. 

 Carex acuta (Linn.) — District 2 and District 4. 



In this list one species, Blysnms rvfus, is omitted, which I for- 

 merly recorded from Eaven Point. I have some slight doubts 

 about its occurrence, since I could not find a specimen amongst 

 my collections, and I think it better to leave it uncertain till an 

 opportunity for further search occurs. 



The following flora contains a large proportion of the plants 

 classed as Atlantic by Watson. More than half the total number 

 found in Ireland occur on the coasts of Waterford and Wexford. 

 Watson's Atlantic group may be divided into two sets of plants : 

 (1) littoral or maritime, which are confined to the coast ; and (2) 

 inland species, which, though chiefly affecting maritime counties, 

 are, in many cases, found far from the vicinity of the sea. These 

 two sub-groups viewed separately help us to appreciate the distri- 

 bution of a considerable number of species in Ireland. The first is 

 best represented on the east and south-east of Ireland ; that is to 

 say, in the district under consideration, where, with one or two 

 exceptions, all of them occur ; the second predominates in the west 

 and south-west of Ireland, and in this group of western species 

 may be included several so-called " Hibernian " plants found in 

 Kerry and Connemara, which do not occur in Britain, and are 

 therefore not dealt with in Watson's "Cybele Britannica." 



