378 87. FILICES. 



Ascends, at the coast level, to North Isles. 



Range of mean annual temperature 52 — 46. 



Native. Littoral, Rupestral. A maritime species, that 

 is also found occasionally some few miles inland, as in 

 Lancashire and Berwickshire. The western, or rather 

 oceanic, tendency of this species being obvious, it is 

 referred to the Atlantic type, notwithstanding its occur- 

 rence in several of the eastern provinces. Between 

 Sussex and Yorkshire, on the eastern side of England, I 

 am not able to give any station for it. One only is re- 

 ported on the coast of Yorkshire, and very few in the 

 province of Tpie. It is less rare on the eastern coasts 

 of Scotland, but still only a local plant there. Mr. New- 

 man was certainly in error when he wrote of A. marinum 

 that "in Scotland it is of common occMrvenc e, 2}(irticularly 

 along the eastern coast. The coast of Aberdeen, Fife and 

 Berwickshire may be particularly noticed" (Hist. p. 278). 

 Perhaps this may be true of Berwick, and might be ex- 

 tended to Kincardine ; but the words here quoted in 

 italics are not so. The Edinburgh Society's Catalogue 

 takes in the plants of both sides of the Firth of Forth, in 

 Fife and Lothian, and this fern is marked " rare ". Three 

 localities only are given in the Flora of Forfarshire. In 

 the Flora Abredonensis (imless " Cove " is within that 

 county, not in Kincardine) not a single Aberdeenshire 

 station is given. One locality is mentioned in the Flora 

 of Moray. And Mr. Stables has sent me a specimen 

 from the east coast of Ross, " parish of Nigg ". On the 

 western side of Scotland, the botany of which has been 

 much less fully explored, A. marinum is repoi-ted from 

 Kirkcudbright, Wigton, Ailsa, Arran, Cantne, Isla, Staffa, 

 Harris, Shiant ; and from several stations in some of 

 these counties or islands. The fact seems to be, that 

 Wales and the South-west of England is the principal 



