Cyathea microdonta (Desv.) Domin
Descripción
Trunks to 6 m tall; stipes with sharp-pointed spines, light to medium brown, scales concolorous, brown; blades 2–3 m long, bipinnate-pinnatifid, papyraceous, pinnae with stalks 0.6–0.7 cm, rachises and pinnae with sparse sharp spines; pinnules essentially sessile, stalks 1 mm, apices acute to acuminate, curved, coarsely crenate to dentate; segments densely hairy on rachises and pinna axes; adaxial surfaces densely short-hairy on pinnules, some hairs also on segment midveins; abaxial surfaces with hairs and minute bullate scales; sori medial, receptacles pilose, indusia absent; 2n=138 (Jam).A
Forma de vida
TerrestreA
Ejemplar revisado
Chis (Matuda 17435, MEXU; Seler 5515, GH; Xolocotzi & Sharp X-241, US). Gro (Lorea 2861, FCME). Tab (Rovirosa 48, US). Ver (Orcutt 3195, 3194 MEXU, NY; Smith 2095, NY).
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Elevación
0 – 1700 mA
Tipo de vegetación
Selva alta, Bosque de neblina/mesófiloA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Cyathea microdonta is distinguished by its slender spines on the rachises and secondary axes, whereas in other species of Cyathea, spines, when present, are limited to the stipes.A