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.
<< 51 - 100 taxa >> Athyrium foliolosum Map not Available Athyrium fragile Map not Available Athyrium goeringianum Map not Available Athyrium grammitoides Map not Available Athyrium hakonense Map not Available Athyrium haleakalae Media not available Map not Available Athyrium himalaicum Media not available Map not Available Athyrium hohenackerianum Map not Available Athyrium iseanum Map not Available Athyrium kaalaanum Media not available Map not Available Athyrium kirishimaense Map not Available Athyrium lanceum Map not Available Athyrium leiopodum Map not Available Athyrium lewalleanum Media not available Map not Available Athyrium mackinnoniorum Map not Available Athyrium macraei Map not Available Athyrium macrocarpum Map not Available Athyrium malaccense Map not Available Athyrium matthewii Map not Available Athyrium mauianum Media not available Map not Available Athyrium maximum Map not Available Athyrium melanolepis Map not Available Athyrium mengtzeense Media not available Map not Available Athyrium mesosorum Map not Available Athyrium microphyllum Map not Available Athyrium micropterum Map not Available Athyrium minimum Map not Available Athyrium minutum Map not Available Athyrium morobense Map not Available Athyrium nakanoi Map not Available Athyrium neglectum Media not available Map not Available Athyrium newtonii Map not Available Athyrium nigripes Map not Available Athyrium nitidulum Map not Available Athyrium oblitescens Media not available Map not Available Athyrium oosorum Media not available Map not Available Athyrium oppositipennum Map not Available Athyrium otophorum Map not Available Athyrium palmense Map not Available Athyrium palustre Map not Available Athyrium pectinatum Map not Available Athyrium pinetorum Map not Available Athyrium pitcairnense Map not Available Athyrium poiretianum Map not Available Athyrium proliferum Map not Available Athyrium pubicostatum Map not Available Athyrium pulcherrimum Map not Available Athyrium puncticaule Map not Available Athyrium pycnocarpon Map not Available Athyrium pycnocarpum Map not Available