Lycopodiace,e of Guiana and their Allies. 45 
repent, rooting here and there, branching at intervals and spreading 
laterally, densely clothed with linear acuminate plain or ciliate edged 
leaves which form several series, all of one kind, overlapping and more 
or less spreading, 2-3 li. 1. |th-£th li. w. Fertile branches, simple, erect, 
cylindric, 6-10 in. long, clothed like the barren stems but less densely, 
the leaves rather smaller. Fertile spikes single at the top, the leaves of 
which are the same in character (not changed into bracts) only longer. 
Sporangia copious, concealed under the leaves. 
Appun n. 1 197, Roraima 5000 ft. IM THURN, n. 146 
Roraima. This is a peculiar species, intermediate be- 
tween the pinnate and dichotomously branched species. 
It has the habit of growth of the former, but resembles the 
latter by having its leaves all of one kind. Even the spikes 
are composed of leaves unchanged only that they are 
longer. It varies a good deal in the length of the leaves 
and consequently in diameter (or apparent diameter) of 
the branches. The unmodified leaves of the fertile por- 
tions give this a claim to be placed in the last division. 
Terrestrial on wet ground, like L. carolinianum. 
General distribution — United States to Brazil, and 
Buenos Ayres, but not yet found in the West Indies. 
4. Lycopodium cernuum, Lin. — Fl. Brasil, 1 14. Gr. Fl. B.W.I. , p. 647. 
Plumier, t. 165. — Stems cylindric, strong, repent, thinly clothed with 
small linear-acuminate "leaves, and throwing up at intervals erect pyra- 
midal or plumose fertile branches, which are i-i|ft. high, with numerous 
tiers of spreading branches alternate in direction to each other, thus 
forming the plumose habit ; these branches again freely branched with 
spreading branchlets, which are fertile at their tips. Leaves in several 
series, dense, not flat, spreading and up-curved, \ li. w., 1 li. 1. seta- 
like, main rachis clothed sparsely like the primary stem. Spikes 
from a line to an inch 1., \-\\ li. diameter. Bracts ovate-acuminate, the 
margin fringed. 
JENMAN, n. 375, Corentyn River; n. 1657, Pomeroon 
River. Readily recognised by its pyramidal or plumose 
habit, resembling young fir trees, each branchlet termi- 
