PteridoPortal - Lygodium

Lygodium
Family: Lygodiaceae Patrick Alexander	FNA Gleason & Cronquist Resources Clifton E. Nauman in Flora of North America (vol. 2) Plants terrestrial. Stems branched, slender. Leaves often more than several meters, 2-pinnate or more divided, climbing by means of twining rachis; fertile pinnae borne toward apex of fertile leaves. Blades of short, alternate primary pinnae. Pinnules ± entire to palmately or pinnately lobed; fertile and sterile pinnae similar or fertile pinnae greatly contracted. Vascular plants of NE US and adjacent Canada Rhizome creeping, slender, dichotomously branched; lvs distichous, remote, sympodially developed, one branch of each dichotomy elongate, the other short and bearing 2 terminal palmately lobed lfls, the whole lf thus resembling a stem with lvs; sterile pinnae basal, the fertile apical, with reduced lf-tissue; sporangia each borne on a short vein, covered by a membranous indusium-like outgrowth from the lf-surface, short-stalked, strongly curved, the annulus appearing lateral; spores tetrahedral; gametophyte thalloid. 3, warm reg. Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp. ©The New York Botanical Garden. All rights reserved. Used by permission.
Species within inventory project: North American Species Lists Lygodium altum Lygodium articulatum Lygodium auriculatum Lygodium boivinii Lygodium borneense Lygodium circinatum Lygodium circinnatum Lygodium cubense Lygodium dimorphum Lygodium flexuosum Lygodium heterodoxum Lygodium hians Lygodium japonicum Lygodium kerstenii Lygodium lanceolatum Lygodium longifolium Lygodium merrillii Lygodium microphyllum Lygodium oligostachyum Lygodium palmatum Lygodium polystachyum Lygodium radiatum Lygodium reticulatum Lygodium salicifolium Lygodium smithianum Lygodium trifurcatum Lygodium venustum Lygodium versteegii Lygodium volubile Lygodium x fayae Images not available Lygodium x lancetillanum Images not available Lygodium yunnanense † lygodium bifidum Images not available † lygodium coloradensis Images not available † lygodium compactum Images not available † lygodium dinmorphyllum Images not available † lygodium exquisitum Images not available † lygodium hastataforme Images not available † lygodium kaulfussi † lygodium larsoni Images not available † lygodium marvinei Images not available † lygodium mississippiensis Images not available † lygodium neuropteroides Images not available † lygodium pumilum Images not available † lygodium spatulatum Images not available † lygodium trilobatum Images not available