Fig. 861. — Portion of pinna, magnified. 



HYMENOPHYLLUM UNILATERALE. 



BORY. 



Wilson's Film Fern. 



PLATE LXXIII. 



Hymenophyllum unilateralc, 



Wilsoni, 



Timbridfjense, 

 peltatuvi, 

 Meyeri, 

 Mcnziesii, 

 Trichomanes Timhridgense, 

 " peUatum, 



BOKY. WlLLDEXOTT. NeWMAN. 



Moore. Soweeby, Sprengel. 

 Presl, Hooker. E. J. Lowe. 

 Hooker and Arnott. Wilson. 

 Mackay. Babington. Deakin. 

 Presl. Nyhan. 



SCHKUIIK. KUNZE. BeNTUAM. 



Desvaxjx. 



Presl. 



Presl. 



LiGHTFOOT. Bolton. 



POIRET. 



Jlymenojpliyllmn — From the Greek, hymenos, a membrane, and itlujllon, 

 a leaf. Unilateralc — One-sided. 



A MORE common species than H. Timhriclycnse, and found 

 in the counties of Cornwall, Devon, Stafford, Salop, Lancashire, 

 York, Northumberland, Westmorland, Cumberland, Glamorgan, 



