454 HYMENOPHYLLUM TUNBRIDGENSE. 



Devon, Somerset, Kent, Sussex, Cheshire, Lancashn*e, Yorkshire, 

 Cumberland, Westmorland, Glamorgan, Brecknock, Merioneth, 

 Carnarvon, Dumfries, Lanark, Peebles, Argyle, Dumbarton, 

 Galway, Clare, Tijij^erary, Cork, Waterford, Kerry, and the 

 Islands of Valentia, Mull, Bute, and Arran. 



It is also a native of Norway, Sweden, Germany, Italy, 

 France, and Belgium; in India, Madeira, the Azores, Mauritius, 

 Chili, Brazil, New Holland, New Zealand, Tasmania, Valdivia, 

 and the Caj^e of Good Hope. 



Fronds annual, pellucid-membranaceous, smooth. Length 

 from one to six inches, colour olive green. More or less 

 lanceolate-ovate in form, and jDinnate below. 



Pinnae alternate and decurrent, and furcately-bipinnatifid. 

 Segments linear, obtuse, and serrated. 



Veins dichotomously branching. 



Fructification extra -marginal. Receptacle oblong-clavate, free, 

 and central. Involucres two-valved, semi-orbicular, sessile, and 

 erect, the upper margin spinuously serrated. 



Stipes slender and wiry, rachis winged, caudex filiform, 

 creeping, densely branching. 



Found from the sea level to the height of twelve hundred 

 feet, and delighting to grow in a warm, damp, sheltered situation. 



Lender cultivation the same treatment adojited with Tridiomanes 

 radicans will suit this Fern, and it succeeds best when planted 

 in a pan at an inclination of forty-five degrees, and kept 

 constantly moist. 



There are no varieties. 



