176 BRITISH FERNS. 
Welch counties, Merionethshire and Glamorganshire; 
next in two western counties, Devonshire and Corn- 
wall; and lastly, in two south-eastern counties, Sussex 
and Kent: in the latter county it grows only in one 
very restricted locality, closely bordering on Sussex. 
In Yorkshire, it has been found on rocks by a stream 
running down to the sea, at a place called Hayburn- 
wyke, near Whitby; near Halifax ; and near Todmor- 
den. ire, at Cliviger ; sparingly in caves at 
Greenfield; and near Coniston. In Merionethshire, 
at C. near Harlech; near Dolgelly; near Bar- 
mouth ; in the vale at Festiniog; and at Rhayadr Du, 
near Maentwrog, where I observed it in some abund- 
ance above the fall. In Glamorganshire, at Melin- 
court Waterfall, where a large patch grows on a stone 
in the middle of the stream, close to the fall; and 
also at Brincon’s, and the Cilhepste Waterfall. In 
Devonshire, im company with Unilaterale, on rocks 
formerly most abundant upon the High Rocks, at 
‘Tunbridge Wells, in Sussex, but large masses of it 
have been rolled off the rocks, like blankets, inso- 
that it is now found but sparingly in this, its 
