PSILOPHYTE

[psi.lo.phyte] n [NL Psilophyton, genus of plants, fr. Gk psilos bare, mere (prob. akin to Gk psen to rub) + phyton plant--more at phyt-] (ca. 1911): any of an order (Psilophytales) of extinct simple dichotomously branched plants from the Paleozoic of Europe and eastern Canada that include the oldest known land plants with vascular structure -- psi.lo.phyt.ic adj