INTRODUCTION. xlvii 



shows a tendency to an Atlantic distribution ttus far, tliat •wliile 

 only one species, Scilla mrna is confined to tte East as opposed 

 to the South and "West, eight species, Ca/rum vertioillatum, Bartsia 

 viscosa, Silthorpia europcea, Aspmragus officinalis, Rhynchospora 

 fusoa, Bromus madritensis, Asplenium lanceolatum, and Adiantum 

 Capillus- Veneris, which occur in the South or "West, are absent from 

 the East. At the same time, many of the species found in the 

 East become more abundant in the South and "West. In the 

 following list the letter E. denotes the species of this type which 

 are found in East Ireland. 



Atlantic Type Plants in Ireland. 



E. Meconopsis cambrioa. E. Wahlenbergia hederaoea. 



E. Coronopus didyma. E. Statioe oocidentalis. 



E. Mathiola sinuata. Bartsia visoosa. 



E. Eaphanus maritimus. Sibthorpia europsea. 



E. Viola Curtisii. E. Pingnicula lusitanioa. 



E. Linum angustifolium. E. Euphorbia Paralias. 



E. Lavatera arborea. E. E. portlandioa. 



E. Hypericum Androssemum. Asparagus officinalis. 



E. H. elodes. E. Scilla vema. 



E. Erodium maritimum. E. Soirpus Savii. 



E. E. moscbatum. Ehynchospora fusca. 



E. Sedum anglicura. Bromus madritensis. 



E. Cotyledon Umbilicus. E. Hymenophyllum tunbridgense. 



Carum vertioillatum. E. H. unilaterale. 

 E. Crithmum maritimum. Adiantum Capillus-Veneris. 



E. Kubia peregrina. Asplenium lanceolatum. 



E. Inula orithmoides. E. Lastrsea aemula. 



If the name, Norman type, proposed by Forbes for this group, 

 be used instead of Atlantic type, then its imperfect development 

 in Ireland will cease to arrest attention, and an explanation will 

 suggest itself similar to that already offered here for the more 

 striking deficiency in Ireland of the Germanic type plants. 



IV. Ieish Plants not FotrsD in Gteeat Beitain. 



"Wliile distinguished from the flora of England above all by its 

 comparative poverty, the Irish flora possesses at the same time a 

 positive element of difference in the presence of a small number 

 of interesting plants, nowhere found in Great Britain. These 



