Description of the genus
Plants terrestrial. Rhizome slender, long creeping, branched. Fronds monomorphic, closely to widely spaced, 2-pinnatifid to 2-pinnate, pinnae gradually decrescent basally or not at all. Veins of pinna lobes not meeting below the sinus, pinnule veins reaching the margin. Sori round, indusiate, indusium reniform, covering sporangia.
Derivation of name: thelys: female, pteris: fern; obscure comparison between the small fern of this genus (female) with the tall (male) shield fern Asplenium filix mas.
Worldwide: c. 3 species, occuring in the north and south temperate regions.
We have 2 taxa in the database for Thelypteris.