54 Proceedings of the Royal Irish Academy, 



A better-marked group is that whose feature is rarity in or absence 

 fi'om Ulster, especially central TJlster (fig. b5). We may cite 



, Papaver Ehseas. Scrophularia aquatica. 



Brassica alba. Origanum vulgare. 



Saxifraga tridactylites Parietaria officinalis. 



Carduus pycnocephalus. Orchis pyramidaHs. 



Leontodon hirtus. Festuca rigida. 

 Verbascum Thapsus. 



Tbe proclivities of this " Anti-TJltonian " group are lowland, light soil, 

 calcicole, and "English"; characters which reach their minimum in 

 the Ulster flora. The sandy soils by the sea enable most of these 

 species to creep northward round the Ulster coast, but inland they 

 are rare or absent. 



Lastly, there is a group of " Anti-Central " species, too widely 

 Bpread to be cited as characteristic "Marginal" plants. One of the 

 best marked is figured (fig. 56) in (Enanthe crocata, and the following 

 resemble it ia range : — 



Hypericum hiimifusum. Myosotis repens. 



Filago germanica. . Carex laevigata. 



Fig. 56. — CEftanike crocata. 



These are all plants of somewhat marginal type, and increase on 

 the hills and non-calcareous rocks. 



One small but well-marked type of distribution which, though in 

 a broad sense " Central," does not typically fall into any of the seven 

 types already defined, deserves mention. The plants composing it 



