Monilophyta
Sporangia scattered over the lower surface of the lamina, or 2-3(-4) fused into synangia in the axils of 2-lobed scale-like or leaf-like appendages, or rarely in terminal strobili, then the sporangia hanging from a peltate structure. Monilophyta
Plants growing in soil, mud or epiphytic
Plants not aquatic
Stems not articulate with several-veined leaves or, if the leaves are 1-veined, then not whorled
Sporangia free or many fused laterally or, if 2–4, then borne dorsally in a rosette on the pinnae (Gleicheniaceae)
Sporangia embedded in 2 rows in a simple spike or panicle borne on a fleshy glabrous stalk attached at or near the base of a sterile frond. Vernation straight or inclined. Terrestrial or rarely epiphytic plants with fleshy roots Ophioglossaceae
Veins of the lamina free, dichotomous. Fertile spikes 1–3-pinnate; the sporangia distinct. Sterile lamina 1-pinnate to 3-pinnate-pinnatifid Botrychium