Lycopodiaceae
A natural order of cryptogams, comprising four genera and about 150 species. They are found in all climates, and are either terrestrial or epiphytal perennials. Generally speaking, the rootstock is running or creeping, but sometimes there is a corm. The stems are dichotomously branched are leafy throughout, and usually rigid. The leaves are imbricate all round the stems, and are arranged in from two to six ranks; they are simple, nerveless, or one-nerved. The capsules or sporangia are sessile in the axils of the leaves or of the scales of a terminal, axillary, sessile or stalked cone, are one to three-celled, compressed, often kidney-shaped, and two-valved. The general affinities of the order are with Filices.