HYMENOPHYLLUM TUNBEIDGENSE. 



397 



TUNBEIDGE FILMY FEEN, {natural size). 



Genus. — Hymenophyllum. Involucre obese, obtuse, bi- 

 valved : receptacle or capsuliferous vein not produced beyond 

 its margin. 



Species. — Tunbeidgense. Rhizome filiform, creeping 

 extensively : frond drooping, pinnate : pinnae alternate, flat, 

 spreading, composed of a dichotomously divided, stiff, wiry vein, 

 accompanied throughout by a membranous wing, serrated along 

 its margin : involucres in the axils of the pinnae, subrotund, 

 flattened, serrated at top. 



BmmumtB, fyUXtB, &L 



Trichomanes tunbridgense, Linn.' Sp. PI. 1561; With. Arr. 



781. 

 Trichomanes tunbridgense, Huds. Fl. Ang. 461, ad partem. 

 Hymenophyllum tunbridgense, Sm. E. F. iv. 326, E. B. 



162 ; Mack. Fl. Hib. 345 ; Franc. 60 ; Newm. N. A. 29, 



jP. 321; Phytol. App. xxx. ; Hook, and Am. 577; Bab. 



416 ; Moore, 207. 



2 Q 



