Phylloglossum

Phylloglossum, a genus in the clubmoss family Lycopodiaceae, is a small plant superficially resembling a tiny grass plant, growing with a rosette of slender leaves 2–5 cm long from an underground bulb-like root. It has a single central stem up to 5 cm tall bearing a spore-producing cone at the apex, and was previously classified variously in the family Lycopodiaceae or in its own family the Phylloglossaceae, but recent genetic evidence demonstrates it is most closely related to the genus Huperzia and is a sister clade to the genus Phlegmariurus, which was formerly included in Huperzia. Morphological characters, as well as molecular characters based on rbcL data, support the close relationship of Phylloglossum to Huperzia. Similarities in spore morphology, sporangial epidermis morphology, phytochemistry, and chromosome number indicate that Phylloglossum and Huperzia are closely related. A morphological character that complicates this is the presence of a perenniating tuber in Phylloglo......read more on Wikipedia.