Cyathea aristata Domin

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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 crecimiento

Árbol/arborescente

Forma de vida

TerrestreA

Nutrición

Autotrófica

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

Estatus del taxón

(A) Como definida actualmente, probablemente una entidad natural (monofilética)

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

Bibliografía

A. Mickel, J. T. & Smith, A. R. 2004: The Pteridophytes of Mexico Vol. 88
B. IUCN 2022: The IUCN Red List of Threatened Species. Versión 2022-2
C. SEMARNAT 2019: MODIFICACIÓN del Anexo Normativo III, Lista de especies en riesgo de la Norma Oficial Mexicana NOM-059-SEMARNAT-2010: 101 pp. – https://www.dof.gob.mx/nota_detalle.php?codigo=5578808&fecha=14/11/2019#gsc.tab=0 [accessed 2023-05-04 06:16]