70 
FERNS. 
[ Ophioglossum . 
Hab. — Scot. : Bernerside Hill, W. of Benvickshire, Mr. W. Baird. South 
side of Loch Tav, and ascending to 3000 feet on adjacent mountains ; Clova and 
Pentland Hills, &c., Mr. H. C. fVatson. Blair Athol, Perthshire, Mr. W. Brand. 
Moray, Rev. G. Gordon. Orkney, Rev C. Clouston. Aberdeenshire, Dr. Murray. 
— Eng. : Sea-hanks near Tynemouth, Northumberland, Miss Hancock. Higher 
Tees, Mr. J. Hogg. Newcastle Town Moor, Mr. R. Bowman. Common about 
Settle, Yorkshire, Mr. J. Tatham. Warwickshire, Rev. W. Bree. Southport, 
Lancashire, Mr. Rylands. Greenfield, near Manchester, Mr. J. Merrick. Cheshire 
and Derbyshire, Mr. IF. Wilson. Pottery Car, Mr. S. Appleby. Clifton, Norton, 
Fislcerton, Newstead, and Sherwood Forest, Notts, Mr. T. H. Cooper. Shotover 
Hill, Oxon., Mr. Baxter. Linton, Cambridgeshire, Mr. C. C. Babington. Near 
Titchborne, Hants (1836), Mr. Forder. Leith Hill, Surrey ; Shirley Common, 
near Croydon, Surrey ; between Dartford and Footscray, Kent ; and S. W. 
of Petersfield, Hants, Mr. W. Pamplin. Deepdene, near Dorking, Mr. J. Nash. 
South Kent, Rev. G. E. Smith. Near Barnstaple, Devon (1836). — Wales: Near 
Wrexham, Mr. J. E. Bowman. Near Rodney’s Pillar, Montgomeryshire, Rev. A. 
Bloxam. Craig Breidden, Mr. Dovaston. 
Geo. — Throughout North Europe and North Asia. 
OPIIIOGLOSSUM, Linn. ADDER’S TONGUE. 
(From o<pig, a serpent, and yXwaaa, a tongue.) 
A, fertile and barren lobes of the leaf of Ophioglossum vulgatum. B, fertile 
lobe after it has shed its spores. C, epidermis. D, transverse section of the leaf- 
stalk. E, rootstock and vernation. F, spores. 
This genus bears its fruit in a simple spike forming one lobe of a two-parted 
leaf. The thccce are connected not only to each other, but attached by their whole 
base to the rachis which bears them; when ripe they open transversely . There are 
about twelve foreign species of this genus, inhabitants of Europe and North 
America. 
OPHIOGLOSSUM VULGATUM. 
COMMON ADDER’S TONGUE. 
(Plate VII, fig. 3.) 
Cha. — Barren lobe of the leaf entire, usually solitary, ovate, obtuse. 
Syn. — Ophioglossum vulgatum of most botanists. — Ophiog. oval uni, Salisb. 
Fig.— E. B. 108.— Bolt. 3— Flo. Lon. 78.— Flo. Dan. 147.— Ger. 404 .—Schk 
153. — Newm.p. 325 (1854). 
Des. — Rootstock small, spindle-shaped or ovate, with many stout, 
yellow, smooth radical fibres, running horizontally. Barren lobe of 
the leaf entire, upright, ovate, blunt, 2 to (5 inches high, of a lurid 
green colour. Stalk tapering downwards, and hollow. Fertile lobe 
a single, unbranched, stalked, and pointed spike, connected with the 
leafy expansion. Thecae yellow, opaque, sessile, in two single rows, 
connected with each other, so that after the round, smooth, yellow 
