Woodsia R.Br.
Descripción
Rhizomes compact to short-creeping, horizontal to ascending or erect; rhizome scales linear-lanceolate, orange-tan at rhizome apices, later bicolorous, each with black central stripe; fronds generally small, clumped, monomorphic; stipes stramineous, sometimes dark at base, vascular bundles 2, round or oblong in cross section; blades 1–2-pinnate-pinnatifid (rarely tripinnate), linear to lanceolate or ovate, membranous to subcoriaceous; pinnae not articulate to rachis, segment margins entire to dentate, sessile, bases usually nearly equilateral; costae often shallowly grooved adaxially, grooves more or less continuous from rachis to costae; indument of glandular (occasionally non-glandular) hairs on both surfaces, rarely absent; veins free, simple or forked, ending before the blade margins, the distal 0.5 mm of the veins swollen, pale, evident, occasionally sunken; sori in one row between costae and margin on ultimate segments, round; indusia basal, dissected into several to numerous filamentous or scale-like segments encircling the sori, persistent but often obscure in mature sori; spores bilateral, brownish, cristate or rugose; x=38, 39, 41.A
Forma de vida
Epipétrica, TerrestreA
Distribución
México (país) Nativo y no endémicoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Species about 35 (8 in the flora), mostly north temperate regions and higher elevations in the tropics. Of the Mexican species, only one (W. mollis) is widespread, the rest comprising a difficult complex of hybridizing taxa, mostly in northwestern Mexico.
Woodsia is often confused with Cystopteris in herbarium collections, though the resemblance may be superficial. Woodsia is easily distinguished from Cystopteris by its persistent stipe bases, multilobed indusia, and obscure veins that end in hydathodes before reaching the blade margins.
A
Woodsia is often confused with Cystopteris in herbarium collections, though the resemblance may be superficial. Woodsia is easily distinguished from Cystopteris by its persistent stipe bases, multilobed indusia, and obscure veins that end in hydathodes before reaching the blade margins.
A