EcoFlora - Athyrium

Athyrium
Family: Athyriaceae Cecelia Alexander	FNA Gleason & Cronquist Resources Masahiro Kato in Flora of North America (vol. 2) Plants generally terrestrial. Stems short-creeping or ascending, stolons absent. Leaves monomorphic, usually dying back in winter. Petiole ± 0.5 times length of blade or less, base swollen and dentate, persisting as trophopod over winter or not; vascular bundles 2, lateral, lunate in cross section. Blade lanceolate to elliptic or oblanceolate, 1--3-pinnate-pinnatifid, gradually reduced distally to confluent, pinnatifid apex, herbaceous. Pinnae not articulate to rachis, segment margins serrulate or crenate; proximal pinnae often reduced, sessile to short-petiolulate, ± equilateral; costae adaxially grooved, grooves continuous from rachis to costae to costules; indument absent or of linear to lanceolate scales or 1-celled glands abaxially. Veins free, simple or forked. Sori in 1 row between midrib and margin, round to elongate, straight or hooked at distal end, or horseshoe-shaped; indusia shaped like sori, persistent, attached laterally or with narrow sinus, or indusia absent. Spores brownish, rugose. x = 40. In species outside the flora stems are sometimes long-creeping to erect, with leaves radially or dorsiventrally arranged. Vascular plants of NE US and adjacent Canada Petiole stramineous, stout, with 2 bundles at the base, these uniting upwardly into a single trough-shaped bundle; blade pinnate to tripinnate, sparingly scaly, otherwise glabrous or sparsely hairy; veins free, simple or forked, reaching the margin; indusia borne on the anterior side of the vein, often recurved and crossing the vein and thus hooked or horseshoe-shaped, rarely back to back, subentire or toothed, often ciliate; large wood-ferns with thick, creeping to suberect rhizomes and thin, light green, deciduous lvs, the rhizome and often also the petioles with conspicuous, entire, fibrous scales; rhizome in our spp. beset with old swollen, starch-filled petiole-bases. 150+, cosmop. 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.
<< 1 - 50 taxa >> Athyrium alpestre Map not Available Athyrium americanum Map not Available Athyrium ammifolium Map not Available Athyrium amoenum Map not Available Athyrium amplissimum Map not Available Athyrium anisopterum Map not Available Athyrium annae Media not available Map not Available Athyrium archboldii Map not Available Athyrium arcuatum Map not Available Athyrium arisanense Map not Available Athyrium asplenioides Map not Available Athyrium asplenoides Map not Available Athyrium atkinsonii Map not Available Athyrium attenuatum Map not Available Athyrium baldwinii Map not Available Athyrium banajaoense Map not Available Athyrium biserrulatum Map not Available Athyrium bourgaei Map not Available Athyrium brevifrons Map not Available Athyrium clarkei Map not Available Athyrium clemensiae Map not Available Athyrium clivicola Map not Available Athyrium costale Map not Available Athyrium cryptogrammoides Map not Available Athyrium cyclosorum Map not Available Athyrium davidii Map not Available Athyrium delavayi Map not Available Athyrium delicatulum Map not Available Athyrium deltoidofrons Map not Available Athyrium devolii Map not Available Athyrium dissitifolium Map not Available Athyrium distans Map not Available Athyrium distentifolium Map not Available Athyrium dombei Map not Available Athyrium dombeyi Map not Available Athyrium drepanopterum Map not Available Athyrium dubium Map not Available Athyrium eburneum Map not Available Athyrium elmeri Map not Available Athyrium epirachis Map not Available Athyrium erythropodum Map not Available Athyrium esculentum Map not Available Athyrium expansum Map not Available Athyrium falcatum Map not Available Athyrium fallaciosum Map not Available Athyrium fenzlianum Media not available Map not Available Athyrium ferulaceum Map not Available Athyrium filix-femina Map not Available Athyrium fimbriatum Map not Available Athyrium flabellulatum Map not Available