

NOTES ON BOTANY. 53 



Physospermum aquiliyifolium, Koch., from Cornwall. 



Bupleurum anstatum, Bart. 



Diotis maritima, Cass. 



Lobelia urens, L., Devon and Cornwall. 



Arbutus Unedo, L., Killarney. 



Erica ciliaris, L., E. vagans, L., and E. Mediterranea, L. 



Bartsia viscosa, L. 



Pinguicula grandiflora, Lam., and P. lusitanica, L. 



Thesium linopliyllum, L. 



. Euphorbia Peplis, L., E. Hiberna, L.. E. pilosa, L., E. Port- 

 landica, L. 



Romulea Columnar, S. and M. Dawlish Warren. 



Simithis bicolor, Kanth. Bournemouth (now, I fear, extinct) 

 and Kerry. 



Juncus pycjnmuSi Kich., and /. capitatus, Weigel. Cornwall. 



Cyperus longus, L. 



Mibora Verna, P.B., Anglesea. 



Oynodon Dadylon, P., Dorset and Cornwall. 



Bromus madritensis, L. 



Adiantum Capilhis-Veneris, L. 



Several of these plants possess for us the special interest of 

 growing within our own area ; most of them are confined to the 

 Mediterranean region and to the Atlantic seaboard, and it has been 

 a great pleasure to me when abroad for my summer holiday to 

 study them, either on the western coast of France or further south 

 in Portugal. How many thousands or tens of thousands of years 

 must have passed since the sea forced its way through the straits 

 of Dover, and so finally separated the British and Continenal 

 stocks, we cannot tell, but the period must have been vast. Yet 

 how slight, or altogether imperceptible, the differences which time 

 has caused ! Hardly a variety is known, even in such a plant as 

 Ophrys apifera, Huds., though from its structure it seems to present 

 almost insuperable difficulties even to an occasional cross with 

 another individual, so that any variation which might arise ought 

 to have every chance of preservation. 



