LASTREA iEMULA. 333 



Sori numerous, circular, and indusiate, forming two rows 

 along the pinnules and pinnulets, situated near the midvein, 

 and eventually becoming confluent. Indusium uniform, having 

 a jagged uneven margin. 



Found in many parts of Cornwall and Devonshire. In 

 Somersetshire, Sussex, Herefordshire, Shropshire, Yorkshire, 

 Lancashire, Cumberland, Northumberland, Glamorganshire, 

 Pembrokeshire, Anglesea, Merionethshire, Carnarvonshire, 

 Forfarshire, Dumbartonshire, Argyleshire, Inverness-shire, Isles 

 of Arran, Mull, Xorth Uist, Orkney, and Guernsey. In Ireland 

 in Antrim, Londonderry, Donegal, Sligo, Mayo, Gal way, 

 Wicklow, "Waterford, Clare, Cork, and Kerry. 



Abroad it is a native of the Azores, Madeira, and Cape de 

 Verd Isles. 



A Fern easily cultivated in a porous soil of loam, peat, and 

 sand. 



I am indebted to the Rev. F. Mules, for fronds from Marwood, 

 Devonshire; also to Mr. C Monkman, for others from Hackness; 

 and to the late Dr. J. R. Kinahan, for others from Foxe's Cove. 



In 1862 I visited the woods above Hackness, where I 

 found this Fern growing in the greatest profusion, yet only 

 near the summits of these hilly plantations. It appeared to 

 delight in these shady rocky situations. 



This species is not given to much variety from the normal 

 form, the following, however, may be mentioned: — 



Angustipixnula, Moore. — Found near Cushendall, in Antrim, 

 by Mr. D. Moore, of the Glasnevin Gardens. The peculiarity 

 consists in the secondary pinnules being more confluent, the 

 lobes irregularly shortened, and the teeth more evidently aristate. 



Interrupta, Clapham.—Y oundi at Hackness by Mr. Clapham, 

 of Scarborough. Fronds variously depauperated, the pinnae and 

 pinnules (more frequently the latter) shortened and mis-shapened. 



Ramosa, Clapham. — Found at Hackness, about the year 

 1858, by Mr. Clapham, of Scarborough. The peculiarity of 

 this variety is having twin fronds attached or joined together 

 at the base. 



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