Lycopodium .] 
FERNS. 
69 
Syn. — Isoetes lacustris of all modern botanists. 
Fig. — E. B. 1084 .—Flo. Lon. N. S. 131 .—Bolt. 41 .—Flo. Dan. 191 .—Sehk. 
fil. 173. 
Des. — Root tufted, composed of long, branched, smooth fibres. 
Leaves radical, tufted, filiform or subulate, 2 to 4 inches high, 
light green, and very brittle. Receptacles formed of the base of the 
leaves : the outer, which are also the larger and older leaves, bearing 
perfect seeds ; the inner and younger leaves, produce finer granules, 
as explained in the Introduction. 
Mr. W. Wilson finds two varieties in Wales ; the one densely tufted, with slender, 
erect leaves, the other with broader and widely-spreading leaves. The former of 
these, Dr. Hooker thinks, may be the Isoetes setacea of Bose. Sprengel says, 
“ that the plant grows at the bottom of carp ponds, where it would not be of very 
easy access, did not the fish assist the botanist by disengaging it from the mud, 
when it is found floating at the edges of the pond.” 
Sit. — Found only in the extreme north of Wales, north of England, and in 
Scotland, which is a curious circumstance, because submerged water plants are not 
in general so strictly confined to particular latitudes or altitudes. 
Hab. — Scot. : Loch Callader, Aberdeenshire, and Loch Brandy, Forfarshire, 
Mr. W. Brand. Loch Whirral, Forfarshire, Dr. Graham. Loch Tay, Perthshire, 
Dr. Greville. Most of the Scottish Lakes, Mr. H. C. Watson. — Ire. : Lakes in 
the Rosses, Donegal, Rev. Mr. Murphy. — Eng. and Wales : Prestwich Carr, 
Northumberland, B. G. Ulleswater, Cumberland, Mr. Williams. Coniston Lake, 
Miss Beever. In Llyn-y-cwm, Pfynnon Frich (Snowdon), Eake Owgan and 
Llanberris lakes; also in Floutern Tarn, between Scale Force and Whitehaven, 
Mr. W. Wilson. Lakes of Denbighshire, Mr. J. E. Bowman. 
Geo. — More copious in Sweden and Denmark than elsewhere. New York and 
northwards in America. 
LYCOPODIUM, Linn. CLUB-MOSS. 
(From XiiKog, a wolf, and novg, irodog, a foot ; the ends of the stems appearing 
like the hairy feet of some animals.) 
A, spike of fruit of Lycopodium selaginoides, natural size. B, two leaves or 
bracts of ditto ; one showing the larger grains, the other the receptacle for the 
smaller. C, receptacle opening and scattering the granules. D, cuticle of a leaf. 
E, section of the stem. F, spore. G, abortive granule. 
A very extensive genus of no less than 140 species, found in all parts of the 
world, some in the hotter, and others in the colder countries. Six only are natives 
of Britain, and these are. far inferior in beauty of appearance to many of foreign 
growth. The Lycopodiums were always taken for and called Mosses by the old 
