520 



0. Stapf. 





Nnrtliorn limit on tlie 

 Continent 





Groat Britain 



f 



1 

 1 



1 







West 



South 



Kast 



? Allitim triquctrum . , . 



Pyrenees; Guern- 

 sey? 





Cornwall 



1 



Scilla autiwwalts .... 



Seine infericure 



Gloucester 



W. Kent 







Norway 



Shetland 



Devon 



Northumb. to 

 Caithness 



S, non-scripta .... 



FTolland 



throughout 



throughout 



throughout 





Normandy 





Kent 



— 



Damasonium Alisma . . 



Belgium 



Salop 



Hants to Kent 



Essex 



Luxula Forsteri 



Bel^Mum 



Cardigan 



throughout 



W. Suffolk 



1 





Seine inferieurc 



>Pembrokoc 



most parts 



1 





Belgium 



— 



Hants 



% 



Bromus madritensis . . . 



1 Belgium 



Pembroke 



most parts 



1 



i 



Hymenophyllum tun- 







1 







Belgium 



W. Inverness 



throughout 



Northumb. to 

 Stirling 





Norway 



1 



Shetlands 



Devon 



York to Suther- ^ 

 land 1 



Trichotnancs radi- 









i 

 i 





Pyrenees 



Merioneth to 

 Arran 



# 



1 



^^^^^^^^^^^^^v 



Adiantum Capilltis Veneris 



Morbihan 



Man 



Dorset 



— 



Asplenium lanceolatum . . 



Calvados 



1 



Cumberland 



throughout 



1 ^ 



Lastraea aemtila . . . 



! 



Manche 



Orkneys 



throughout 



York and North- \ 

 umb. 



Summary. 



Want of space forbids me to enter into a detailed consideration of 

 the facts compressed into the columns of the tables ; but I may be allowed 

 to summarise them under certain points of view and point to a few of 

 the most general conclusions that suggest themselves to me. As already 

 pointed out (see p. 512) the Atlantic and Mediterranean elements in the 

 British flora amount to about 9 % of the phanerogams and vascular crypto- 

 gams. Of these little more than two fifths are referable to the Atlantic, and 

 almost three fifths to the Mediterranean element. 



i 



■1 



1 



\ 



\ 



Neglecting 



class 1, we find among the Littoral species: 



I 



18 Atlantic 30 Mediterranean 



(or per hundred 37.5 



and among those of class 3 . , . 47 

 (or per hundred 50 



» 



» 



» 



62.5 



48 

 50 



» 



) 



) 



Littoral species. Of these 48 occur on the coasts of Great Britain 

 and 24 on those of Ireland; but in either case the relative share in At- 

 lantic and Mediterranean elements is the same as in the total, that is 3 At- 

 lantic to 5 Mediterranean species. The only Irish coast plant which (as a 



I 



/ 



