Cyathea aristata Domin
Descripción
Stems short, erect, hardly emerging from soil, clothed with bicolorous scales; fronds ca. 2 m long; stipes 1⁄3–1⁄2 the frond length, stramineous, brown towards base, spines lacking or present at base, 1 mm long, scales dark brown with margins pale, erose; blades pinnate-pinnatifid, rachises non-alate, terminal portion gradually pinnatifid; pinnae sessile to slightly stalked, to 32 cm long, lobes slightly falcate, serrulate toward apices, sharply cuspidate, apices acuminate, dark spot at base of each pinna abaxially; costae with a few bicolorous scales and minute brown, amorphous scales; veins mostly 1–2-forked, mostly free, basal veins connivent at sinuses; sori supramedial (2⁄3–3⁄4 the way from costae to margins), almost submarginal on veins, not necessarily at the vein fork, 0.5–0.8 mm in diam.; indusia brown, subentire, 0.5 X 0.3 mm, hood-like, on proximal side of sori.A
Forma de vida
TerrestreA
Ejemplar revisado
(Related to the synonym Cnemidaria apiculata) Oax (Hallberg 1557, NY; Mickel 994, 5676, 5717, 5935, NY). Ver (Lira 30, MEXU, XAL; Pérez García et al. 165, MEXU).A
Distribución
México (país) EndémicoA
Elevación
1100 – 1700 mA
Tipo de vegetación
Bosque de neblina/mesófiloA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
Sujeta a protección especial (Pr)C
Discusión taxonómica
(In relation to the synonym) Cnemidaria apiculata is distinct by its serrate pinna margins and mostly free veins. The dark spot at the base of each pinna, possibly a nectary or aerophore, deserves study regarding its function and origin.A