called the Fox fern. Its botanical synonyms are Blechnum 

 Boreale, and Lomaria and Osmimda Spiccmt. 



V. OTSTOPTEEID^. 



1. Bbittlb Bladder Febn {Oystojateris FragiUs). Pt. 3. 



A delicate fragile fern of elegant appearance. Its feathery 

 fronds are bi-pinnate and spear-shaped, the stipes and stem 

 being of a dark colour. The circular sori are covered with 

 delicate white indusia, attached to veins branching from the 

 midrib of the pinnules. It is commonly found in England and 

 Scotland, in damp situations, on walls and rocks, and generally 

 in the vicinity of water. It grows readily in the open air, or 

 in cases, but requires drainage and plenty of water. Its other 

 botanical names are Gystea and Oyathea FragiUs. Its varieties 

 are distinguished as Dentata, which is smaller and has the 

 pinnules rounded at the extremity, and Dichieana, with short 

 broad and pinnatifld pinnae. 



2. MoTTNTAiN Blabdeb, Feen {Gystopteris Montcma). 



The fronds of this fern are triangular in form and bi-pinnate ; 

 they aje from four to eight inches in length, and the pinnae are 

 long in proportion ; the pinnules are deeply indented and ser- 

 rated. It is a delicately-formed plant, and very scarce. It is 

 found in some parts of England, and somewl^i resembles the 

 Limestone Polypody in form. It is known by the botanical 

 names Gystopteris MyrrMMfoUv/m and PoVypodjmm and Asipi- 

 dium Montcmwm. 



VI. GTMN0GEAMMB.a3. 



1. Pine-Leaved Gtymnogbamma {Gymnogramma 



Leptophylla). Pl. 5. 



A scarce and delicate little fern, with bi-pinnate fronds, 

 from three to six inches in length. The pinnae are thrice- 

 lobed and serrated. The rachis is black, the sori abundant, 

 oblong, but without indusia. It is found in Jersey and is 

 supposed to grow in Devonshire. It likes a light sandy soil 

 and plenty of moisture. 



VII. HTMENOPHYLLE^. 



1. ElLMT Pern (Symenophylbwm, Twribridgense). Pl. 4. 



A delicate and fragile fern growing in tufts. It has pinnate 

 fronds of a brownish colour. The thin membranous pinnae, 



SIS 



