Tent. Fl. Germ. 3(1,1): 31, 58. 1799
Common names: Lady fern
Etymology: Greek athyros, doorless the sporangia only tardily push back the outer edge of the indusium
Treatment appears in FNA Volume 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.
Species about 180 (2 in the flora).
Facts about "Athyrium"
|Author||Masahiro Kato +|
|Common name||Lady fern +|
|Etymology||Greek athyros, doorless + and the sporangia only tardily push back the outer edge of the indusium +|
|Illustration copyright||Flora of North America Association +|
|Illustrator||John Myers +|
|Publication title||Tent. Fl. Germ. +|
|Publication year||1799 +|
|Reference||johnson1986c +, kato1977a + and liew1972a +|
|Source xml||https://firstname.lastname@example.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse grained fna xml/V2/V2 540.xml +|
|Taxon family||Dryopteridaceae +|
|Taxon name||Athyrium +|
|Taxon parent||Dryopteridaceae +|
|Taxon rank||genus +|
|Volume||Volume 2 +|