254 



LASTREA FILIX-MAS. 



Shropshire, Surrey, Kent, Sussex, AViltshire, Derbyshire, Lan- 

 cashire, Cornwall, Devonshire, Somersetshire, Cardiganshire, 

 Pembrokeshire, Denbighshire, Merionethshire, Montgomeryshire, 

 Argyleshire, Dumbartonshire, Forfarshire, Perthshire, Sterling- 

 shire, Isle of Arran, Sligo, Galway, Wicklow, Mayo, Kerry, 

 and probably in other counties, also in the Channel Islands. 

 Where found it is frequently very abundant. 



Fig. 204.— Miciaie yiiina. 



Dentata, Lowe. (Fig. 204.) — A large-growing variety, 

 found near Nettlecombe by Mr. Elworthy. Not unlike the 

 coarser and more lax forms of Polystichum angulare. Length 

 of frond four feet. Pinnge above forty pairs, longest in the 

 centre of the frond, where there are above thirty pairs of 

 pinnules. Pinnae acuminate. Pinnules very coarsely, profoundly, 

 and strongly dentate, the basal pair much the longest, containing 

 seven pairs of spore-cases; the apices of the pinnules rounded 

 and dentate. Copiously soriferous. Colour vivid green. 



DissiMiLE, Monhman. — Found at Castle Howard, by Mr. C. 

 Monkman, of Malton. This variety is exactly analagous to the 

 form dissimile in Polystichum angulare, and will need no 

 further description. 



