60 
FERNS. 
[Hymenophyllum . 
Via. — The properties of Adiantum are very uncertain. Its use is said to 
give name to the syrup Capillaire. It has neither fragrance nor flavor, 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 Hayle and 
St. Ives, Professor Henslow. Isles of Arran, county of Galway, Dr. Osborne. 
At Wrisbeg, on a rock facing south-west on the shore of Loch Bulard, Mr. C. C. 
Babinyton. 
Geo. — South Europe, Isles of Bourbon, Teneriffe, Jamaica, and Hispaniola. 
HYMENOPHYLLUM, Swz. FILMY PERN. 
(o(a>)v, a membrane, poXXov, a leaf ; or the membranous-leafed Fern.) 
A, part of a frond of Hymenophyllum Tunbridgense. B, the same slightly 
increased to shoiv 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 contracted 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 theca, the annulus of which does not coincide with the petiole, but is 
placed transversely . CSee Introduction j . 
I .—HYMENOPHYLLUM TUNBRIDGENSE. 
TUNBRIDGE FILMY-FERN. 
(Plate 6, fig. 4.) 
Cha. — F rond pinnate. Pinnae pinnatifid, erect. Lobes serrated. 
Rachis winged. Involucre orbicular, serrated at the top. 
Syn. — Hymenophyllum Tunbridgense, Smith, Willd., Hook., Mack., Swz., 
Gray. — Trichomanes Tunbridgense, Linn., Iluds., With., 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. Rachis naked on the 
lower part, capillary, black, broadly winged all the way down. 
Fronds solitary, at intervals along the creeping stem or root, 1 to 
2 inches high, of a light green color. Pinna; alternate, growing 
quite upright, their veins dichotomouslv branched. Lobes sharply 
