HYMENOPHYLLUM UNILATEEALE. 303 



stated, the two plants are often found in close proximity, parti- 

 cularly about the waterfalls in the vicinity of KiUarney. 



Shetland Isles. — The late Mr. Edmondston stated that he had " oh- 

 served it in one place overhanging a subalpine stream near Ska, Unst, in 

 great luxuriance and abundance." 



Orkney Isles. — Mr. Babington, in company with Dr. Balfour, found 

 this species on the summit of Langa, in Harris, at a probable elevation of 

 2700 feet— (See Cat. Heb. pp. 8 and 23). 



On the main land of Scotland it has been found in the undermentioned 

 counties, and its absence from many others is only conjectural. 



Perthshire. — Mr. Gourlie and many other botanists have collected it 

 on Ben Lawers. 



ARaYLESHiRE. — Mr. Babington has found it at Crinnan, and Mr. 

 Adamson at Dunoon. 



Ddmbaetonshire. — Mr. Gourlie has met with it abundantly on rocks 

 on the banks of Loch Lomond. 



Renfrewshire. — Mr. Gourlie has found it on rocks and hills above 

 Gourock. 



Ddmfeiesshtre. — It has been found by Mr. Babington and Mr. 

 Cruickshank in Girpel Lane, Kirkpatrick-juxta. 



Descending into England, we find it iq four northern counties. 



Cumberland. — Mr. Watson gives me Scale Force as a locality ; the 

 Rev. Mr. Finder speaks of it as of common occurrence on the rocks and 

 screes ; in addition to Scale Force, he mentions Scaw Fell, High Still, 

 Honister Crag, Gatesgarth Dale, Borrowdale, &c. 



Westmoreland. — Mr. Bowerbank observed it on Ambleside ; Miss 

 Beever has foimd it at Stock Gill and Dungeon Gill ; and Mr. Finder 

 speaks of it as not uncommon in the county. 



Yorkshire. — The late Mr. S. Gibson informed me that he found it at 

 Turner's Clough, seven miles from Halifax, on the Oldham road ; Mr. J. 

 Backhouse, jun., on rocks near Lower Harrogate ; and Mr. Wilson near 

 Greenfield. 



Lancashire. — Miss Beever and Mr. Finder have found it on the Old 

 Man mountain ; Mr. Sidebotham sparingly in caves at Greenfield ; Mr. 

 Simpson commonly near Lancaster ; Dr. Wood on hills near Bury ; and 

 the late Mr. S. Gibson at Thevilly, near Burnley. 



Passing into Wales, it is credibly reported from five counties. 



Caernarvonshire. — As far as I am able to decide, I should say that 

 the very numerous habitats in the vicinity of Snowdon, Llanberis, Cwm 

 Idwell, Nant-Frangon, &c., although generally accompanied by the name of 

 H. tunbridgense, belong exclusively to the present species. I formerly sup- 

 posed I had found H. tunbridgense in Caemar^•onshire, but, on referring 



