87. FiLiCES. 279 



habitat of A. marinum ; whicli stretches eastward along the 

 Channel to Hants and Sussex (single stations in each ?), 

 and northward to Orknej% then descending the eastern 

 coast in diminished frequency to Yorkshire. It is thus 

 essentially Atlantic in its tj'pe, but withal so nearly en- 

 circling Britain, as to make an approximation to the 

 British or general type. Although more thoroughly a 

 maritime plant, this fern associates well with Scilla verna, 

 Sedimi anghcum, and Cotyledon Umbilicus, in its peculi- 

 arities of distribution. 



" W- fe^^ /*->^^^ '^ -^^ 'Au^t^u^fJ^y/^^ Ut^A " 

 yi*. ff^, T^A^t^' ^J^jiCii ^o»^<«— - 



1398. ASPLENIUM LANCEOLATUM, Hvds. 



Area 13[3]*567^* [10]. 



South limit in Cornwall, Isle of Wight, Sussex. [Kent ?] 



North limit in CaeniaiTon or Denbigh. [West York ?] 



Estimate of provinces 6. Estimate of counties 10. 



Latitude 50 — 54. Atlantic type of distribution. 



Agi-arian region. Inferagi'arian — Midagrarian zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 200 yards, or upwards, in North Wales. 



Range of mean annual temperature 52 — 46. 



Native. Rupestral. A local plant, but perhaps found 

 in more than ten coimties. It is satisfactorily reported 

 from CornwaU (H. C. W.), Devon (Mr. F. H. Goulding !), 

 Somerset (Rev. W. H. Coleman), Sussex (Mr. Borrer), 

 Gloucester (]VIr. Thwaites !), Glamorgan (Mr. Gutch), Pem- 

 broke (Mr. Edwin Lees), Merioneth and Caernarvon (IVIr. 

 Newman) . According to Bolton it has been found on a 

 wall in the village of Wharfe, Yorksliii-e. Mr. Arthur 

 Aikin (B. G.) reported it from Hagmon HiU, Slu-opshire. 

 And Bobart is quoted (E. F.) for its existence in the north 



