TNTEODUCTIOIf. 



It 



Western Plants. 



(Not found East of Longitude 8°'W.) 



Thalietrum alpinum. 

 Banunculus tripartitus. 

 Arabis petrasa. 

 Helianthemum guttatum. 

 H. vineale. 

 Viola stagnina. 

 Arenaiia ciliata. 

 Astragalus hypoglottis. 

 Lathyrus maritimus. 

 Spiraea Filipendula. 

 Fotentilla f ruticosa. 

 Eosa mierantha. 

 Saxifraga nivalis. 

 S. Geum. 



Epilobium alsinefolium. 

 Galium sylvestre. 

 Inula salicina. 

 ♦Senecio squalidus. 

 Hieracium Gibsoni. 



Arbutus Unedo. 

 Erica Maokaii. 

 E. mediterranea. 

 Dabeocia polifolia. 

 Microcala filiformis. 

 Gentiana verna. 

 Limosella aquatica. 

 Sibthorpia europsea. 

 Euphrasia Salisburgen- 



sis. 

 Finguicula grandiflora. 

 Thymus Chamaedrys. 

 Teucrium Scordium. 

 Ajuga pyramidaUs. 

 Oxyria digyna. 

 Epipactis atro-rubeus. 

 Habenaria intacta. 

 tSisyrinchium angusti- 



folium. 



Simethis bicolor. 

 JAllium Bahingtonii. 

 JA. Soorodoprasum. 

 tJuncus tenuis. 



Potamogeton lanoeolatus. 



P. Kirkii. 



Naias flexilis. 



Eriocaulon septangulare. 



Ehynchospora fusoa. 



Oarex punctata. 



Desohampsia discolor. 



Poa alpina, 



Adiantum Capillus-Vene- 

 ris. 



Asplenium lanceolatum. 



Polystichum Lonchitis. 



Lycopodium inundatum. 



Isoetes echinospora. 



Nitella Nordstedtiana. 



Southern Plants. 



(Not found North of Latitude 52J°N.) 



Eanuuculus tripartitus. 

 tLepidium latifolium. 



Lathyrus maritimus. 



Eosa mierantha. 



Saxifraga Geum. 



Biotis candidissima. 

 *Senecio squalidus. 



Arbutus TJuedo. 



Microcala filiformis. 

 JAntirrhinum Oroutium. 



Sibthorpia europasa. 



Finguicula grandiflora, 

 JEumex pulcher. 



Simethis bioolor. 



Asparagus officinalis. 

 JAUium Soorodoprasum. 

 Carex punctata. 

 Asplenium lanceolatum. 

 Chara connivens. 

 C. canescens. 

 Nitella Nordstedtiana. 



It will be seen from a study of these lists that more th-an three- 

 fourths of the southeru plants are iacltided in the western group, 

 or, in other words, that the great majority of the distinctively southern 

 species are confined to the south-west, where the two arbitrary 

 topographical divisions of south and west Ireland overlap. Only 

 three of the southern plants, Biotis candidissima, Asparagus offici- 

 and Cha/ra connivens are confined to the south-east. 

 e2 



