Stewart — The Botamj of the Island of Rathlin. 85 



The next largest of Watson's groups, his "English type," is 

 represented in Eathlin by twenty species, namely : — 



Nnphar lutea. 

 Senebie:a coronopns. 

 Hyper cam androsgemnm. 

 H. elodes. 

 TJlex nanus. 

 Trifolium minus. 

 Helosciadum nodiflorum. 

 Smyrnium olusatrum. 

 Inula helenium. 

 Pulicaria dysenterica. 



The ** Scottish type " has 9 species : — 



Pamassia palustris. 

 Sagina subulata. 

 Antennaria dioica. 

 Orobanche rubra. 

 Lamium intermedium. 



Carduus tenuiflorus. 



Convolvulus sepiiun. 

 Yerbascum thapsus. 

 Centunculus minimus. 

 Samolus valerandi. 

 Ceratophyllum demersum. 

 Habenaria chlorantha. 

 Potamogeton lucens. 

 Sclerochloa loliacea. 

 Festuca arundinacea. 



Galeopsis yersicolor. 

 Piaguicula vulgaris. 

 Empetrum nigrum. 

 Carex dioica. 



Of the " Atlantic type " there are six species : — 



Eaphanus maritimus. 

 Lavatera arborea. 

 Lepigonum rupicola. 



Sedum anglicum. 

 Pinguicula lusitanica. 

 Scirpus savii. 



Of the " Highland type " only four species : — 



Sedum rhodiola. 

 Hieracium iricum. 



Hieracium pallidum. 

 Selaginella selaginoides. 



TTsiag these figures for comparison with the flora of Ireland at 

 large, we get the following results : — Relative proportions of the 

 several types in the flora of Ireland and in that of Rathlin, disregard- 

 ing fractions — 





Irisli Flora. 



RatHin Flora. 



British type, 

 English type, 

 Scottish Lype, 

 Atlantic type. 



58 per cent. 

 20 ,, 



7 „ 



4 „ 



86 per cent. 

 7 „ 

 3 „ 

 2 „ 



Highland type, 

 Germanic and | 

 Hibernian types, ) 



5 „ 



3 ,, 



1 

 



Alpine plants are necessarily excluded by reason of the low eleva- 

 tion of the hills. The geographical position equally excludes plants of 



