Ly*go"di*um (?), n. [NL., fr. Gr. &?; flexible; &?; a willow twig + &?; form.] (Bot.) A genus of ferns with twining or climbing fronds, bearing stalked and variously-lobed divisions in pairs.

&fist; Lygodium palmatum, much prized for indoor ornament, inhabits shaded and moist grassy places, from Massachusetts to Virginia and Kentucky, and sparingly southwards.