The Selaginella denticulata looks like a moss ground cover with dorsoventrally flattened stems, creeping, bearing four rows of ovate leaves denticulate edge of different sizes according to their position: the two lateral rows are higher than the ridges. Is sterile and fertile stems stems with sporangia called strobili. Its genome has 18 chromosomes.
Their creeping growth and ground cover allows you to live and colonize many habitats, provided they are cool and shaded, but with enough light, avoiding direct sunlight, surfaces and cracks of rocks and stones, as an epiphyte on trunks and branches of old trees with rough bark and a bit of substrate in the form tufted floor covering permanently wet, etc. .. Along with lichens, liverworts and true mosses with which it shares the same habitat, plant substrate is formed by decomposition of the older layers and juxtaposition of a new one every year, growing on decomposed layer of the previous year.
Small spines or denticles over the edge of the microscope micrófilo at 100 magnification. These spines give the name of "denticulata".