lyi 



INTEODUCTIOIT. 



Hasten, Plants. 

 (Not found Vest of Longtitude 7° W.) 



Thaliotrum dunense. 



Eanunoulus fluitans. 



Barbarea intermedia, 

 ■f Sisymbrium Irio. 

 tTeesdalia nudicaulis. 



Elatine Hydropiper. 



Hypericum hirsutum. 



Geranium sylvatioum. 



Gr. pratense. 



Trigouella omithopo- 

 dioides. 

 tTrifolium subterraneum. 

 fT. glomeratum. 



Bosa Ubernica. 



E. glauca. 



Saxifraga granulata. 



Adoxa Moschatellina. 

 *Seneoio visoosus. 



S. erucifolius. 



Hieraeium flooculosum. 



H. prenanthoides. 



H. strictum. 



H. auratum. 



H. corymbosum. 



Pyrola secunda. 

 JHottonia palustris. 



Myosotia collina. 



Scrophularia umbrosa. 



Atriplex farinosa. 



Scilla vema. 



Colcbicum autumnale. 

 *Acorus Calamus. 



Potamogeton fluitans. 

 Zanniohellia polycarpa. 

 Carex pauciflora. 

 C. elongata. 

 C. divlsa. 

 C. Buxbaumii. 

 C. rbyncopbysa. 

 Calamagrostis stricta. 

 Poa palustris. 

 Glyceria Borreri. 

 Festuca uniglumis. 

 Equisetum Moorei. 

 Chara connivens. 

 Tolypella proUfera. 

 T. intricata. 

 Nitella gracilis. 



Northern Plants. 

 (Not found South of Latitude 54j° N.) 



Eanunoulus fluitans. 

 TroUius europsBus. 

 tTeesdaKa nudicaulis. 

 Geranium sylvatioum. 

 G. pratense. 

 Eubua Chamaemorus. 

 Eosa hibemiea. 



Adoxa Moseiatellina. 

 Ligusticum scoticum. 

 Hieraeium prenanthoides. 

 Pyrola secunda. 

 Melampyrum sylvaticum. 

 Ulmus montana. 

 Salix nigricans. 



Potamogeton fluitans. 

 Zannichellia polycarpa. 

 Carex pauciflora. 

 C. Buxbaumii. 

 C. rhynchophysa. 

 Calamagrostis stricta. 

 Equisetum pratense. 



Almost three -foTirths of the Norttem Plants are confined to the 

 north-east, this gronp showing a tendency to an eastern distribu- 

 tion hardly less strongly marked than that shown hy the Southern 

 group to a western distribution. Whatever the origin of these 

 topographical groups may have been, they may be taken as an 

 expression of existiag climatic differences. Their maintenance 

 as groups depends chiefly on the permanence of the recognized 

 diversities of moisture and temperature which distinguish the East 

 from the "West and the North from the South. 



VIII. Ieish Botanical Disxeicis. 



The division of Ireland into botanical provinces or districts adopted 

 in this work is that proposed by the late Professor Babington in a 



