Two distinct lineages occur within the Selaginellaceae that could be recognized as separate genera. In one (Lycopodioides), plants produce rhizophores (leafless shoots that produce leafy shoots) and have four-angled strobili. In the other (Selaginella in the strict sense), the strobilus is circular in cross-section and the plants do not have rhizophores. In this key, the two lineages are included within Selaginella. Reference: Valdespino (1993).
This Genus’s Species in New England:
Visit this genus in the Dichotomous Key