CO 
FERNS. 
[. Hymenophyl I um . 
Vir. — T he properties of Adiantum are very uncertain. Its use is said to 
give name to the syrup Capillaire. It has neither fragrance nor flavour, and 
when boiled yields only a little mucilage. 
Hab.- — Port Kerig, Glamorganshire (verified 1834). Banks of the Carron, a 
rivulet in Kincardineshire, Professor Beattie. In a small cave on the east side 
of Carrach Gladden, a cove on the north coast of Cornwall, between Havle and 
St. Ives, Professor Henslow. Isles of Arran, county of Galway, l)r. Osborne. 
At Wrisbeg, on a rock facing south-west on the shore of Loch Bulard, Mr. C. C. 
Babington. 
Geo. — South Europe, Isles of Bourbon, TeuerifFe, Jamaica, and Hispaniola. 
HYMENOPHYLLUM, Swz. FILMY FERN. 
(Tprjv, a membrane, ipvXXov, a leaf; or the membranous-leafed Fern.) 
A, part of a frond of Hymenophyllum Tunbrulgense. B, the same slightly 
increased to show the veins of the frond, and the origin and character of the 
fruit. C, sorus magnified, and one of its covers removed. D, theca with 
transverse ring. E, the same opened. F, spores. 
In this small and delicate genus, a lobe of the pinna is constructed into the 
fruit and its receptacles, the lamina of the lobe forming two valves, inclosing 
between them the midrib, to near the end. of which are attached several ringed and 
petioled thecae, the annulus of which does not coincide with the petiole, but is 
placed transversely. (See Introduction.) 
1 —HYMENOPHYLLUM TUNBRIDGENSE. 
TUNBRIDGE FILMY FERN. 
(Plate VI, fig. 4.) 
Cha. — Frond pinnate. Pinnae pinnatifid, erect. Lobes serrated. 
Racbis winged. Involucre orbicular, serrated at the top. 
Syn. — Hymenophyllum Tunbridgense, Smith, Willd., Hook., Mack., Swz., 
Gray. — Trichomanes Tunbridgense, Linn., Huds., IVith., Bolt., Lightf . — 
Trichomanes pulchellum, Salisb. 
Fig. — E. B. 162. — Hook, in Flo. Lon. 71. — Bolt. 31. — Flo. Dan. 954. — 
Hedw. 3. — Forst. in Flo. Tonb. ( excellent ), Newm.p. 92. 
Des. — Root black, fibrous, hairy, extensively creeping, rather 
upon than under the surface of the ground. Racliis naked on the 
lower part, capillary, black, broadly winged nil the way down. 
Fronds solitary, at intervals along the creeping stem or root, l to 
2 inches high, of a light green colour. Pinnae alternate, growing 
quite upright, their veins dichotomously branched. Lobes sharply 
