32 THE VIVARIUM. 
the Wall Spleenwort (Asplenium trichomanes, Fig. 20); the Sea 
Spleenwort (Asplenium marinum) ; the Green-stalked Spleenwort 
(Asplenium viride); the Wall Rue (Asplenium ruta-muraria) ; 
the Forked Spleenwort (Asplenium septentrionale) ; the German 
Spleenwort (Aspleniwm germanicum) ; the Large-leaved Cyrto- 
mium (Cyrtomiwn falcatum); the Comely Hare’s-foot Fern 
(Davallia decora); the Graceful Hare’s-foot Fern (Davallia 
elegans) ; the Blackened Boss Fern (Lastrea atrata); the Pro- 
lific Boss Fern (Lastrea prolifica); the Opaque Boss Fern 
SV UW) 
Od 2 Y) £& 
OS 
A NW fh f Le 
qa as 
7 ¢ SW : 
‘ro. ey A) 
VW ros) AY 
Fia, 20.—ASPLENIUM TRICHOMANES, 
(Lastrea opaca); the Alpine Hard Fern (Lomaria alpma) ; the 
Climbing Fern (Lygodiwm scandens) ; the Palmate Climbing Fern 
(Lygodium palmatum) ; the Elk’s-horn Fern (Platycertiwm grande) ; 
the Common Polypody (Polypodium vulgare) ; the Irish Polypody 
(Polypodium v. semilacerum) ; the Welsh Polypody (Polypodium 
v. cambricum) ; the Six-angled Polypody (Polypodium hexagono- 
pterum) ; the Saw-leafed Bracken (Pteris serrulata) ; the Slender 
Bracken (Pteris scaberula) ; the Crisped Hart’s-tongue (Scolopen- 
drium vulgare crispum) ; the Endive-leafed Hart’s-tongue (Scolo- 
pendrium v. laceratum) ; the Branched Hart’s-tongue (Scolopen- 
drium v. ramosum). 
