18 HYMENOPHYLLTJM TUNBRIDGENSE. 



larney, Penzance, Tunbridge Wells, Exeter, and from several 

 places in Westmorland. 



Found throughout Europe, India, Mauritius, South Africa, 

 Chili, Brazil, Azores, Madeira, and New Zealand. 



The fronds are pellucid, smooth, membranaceous, olive green 

 in colour, elongated-ovate, pinnate below; the pinnae subvertical, 

 alternate, decurrent, winged, and furcately pinnatifid; segments 

 linear-obtuse, and spinulosely serrate. 



Veins dichotomously branched; venules free. 



Phizoma rigid, creeping, filiform, and dark brown in colour, 

 and branched. 



Stipes slender. Pachis winged. 



Sori extra marginal, the two valved involucres projecting 

 outwards from the margin, the valves being somewhat orbicular, 

 flattish, and spinulosely serrate on the upper margin. 



Length from one to six inches. 



Inhabiting mountainous and rocky places, covering the damp 

 rocks and trunks of trees. 



My thanks are due to Miss Millett, of Penzance; Mrs. Delves, 

 of Tunbridge Wells; Mr. P. J. Gray, of St. Thomas', Exeter; 

 and Mr. Clarke, of Flass House, Crosby Pavensworth, for plants 

 of this Fern. 



It may be procured of any Nurseryman. 



The illustrations are from plants in my own collection. 



