Plate 51. 
LYCOPODIUM inundatum, Linn. 
Marsh Club-Moss . 
Lycopodium inundatum; small, stem creeping, short, branched; branches ho¬ 
rizontal, also creeping; fertile ones erect; leaves secund on the sterile 
branches, erect on the fertile ones, lanceolato-subulate, entire, obsoletely 
1-nerved; spikes sessile, subfusiform; bracts subulate, remarkably dilated, 
and cordate and convex at the base, with a spinous tooth on each side. 
Lycopodium inundatum. Linn. Sp. PI. jo. 15 66. Sw. Syn. Ml. p.lTl. Willd. 
Sp. PI. v. 5. y. 25. Schk. Fit. t. 160. 8m. Eng. Bot. t. 239. Engl. FI. 
v. 4. p. 332. HooJc. et Am. ed. 8. p. 597. Spring , Monogr. Lycop. p. 74, 
and Part 2. p. 6. 
Lycopodium Bigelovii. OaJces and Tucker man in Sillim. Journ. 
(L. Carolinianum and L. alopecurioides, and not a few others, supposed species, 
must be added to this list, if we were to make the exotic synonymy 
complete.) 
Lycopodium palustre. Lam. FI. Fr. v.l. p. 52. 
Plananthus inundatus. Beauv. Prodr. d'FEtheog. p. 111. 
Hab. Moist heathy places occasionally overflowed by water, and boggy ground, 
in England, Scotland, and Ireland : often overlooked, probably on account 
of small size and spongy locality; by no means peculiar to mountain 
districts. 
As seen in Great Britain, and in other temperate regions of the 
earth, in Europe generally, and in some parts of North America, 
this is a small growing Club-Moss , with all the sterile branches 
lying close to the ground, holding so firmly in the spongy soil 
by numerous fibres that it is very difficult to collect specimens 
entire. Our figure here given is among the largest of the nor¬ 
mal state of the plant; but in North America, especially in the 
southern United States, it gradually passes into the larger forms, 
known as L. Carolinianum , Linn., and the still larger L. alope- 
curoides , Linn., which attains its maximum in tropical South 
America. M. Spring does not indeed seem to recognize this 
affinity in words; but he does de facto , by uniting the L. Bir/e- 
lovii of Oakes and Tucker man with our European inundatum; 
whereas my authentic specimens prove it to be the Carolinianum- 
form. Some of our specimens of alopecuroides have sterile 
branches, or surculi, and erect and fertile ones of a firm rigid 
character and are more than a foot or a foot and a half long. In 
