Diplazium puberulentum Mickel & Beitel

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Diplazium puberulentum Mickel & Beitel

Descripción

Rhizomes erect; rhizome scales brown, concolorous, 1–3 X 1 mm, entire; fronds to ca. 80 cm long; stipes stramineous to tan, 27–38 cm X 3–4 mm, ca. 1⁄2 the frond length, densely puberulent on all surfaces, including adaxial grooves, the hairs ca. 0.1 mm long; blades herbaceous, 2-pinnate-pinnatifid proximally, ovate, 35–40 X 20–25 cm, apices pinnatifid, buds absent; rachises puberulent on all surfaces, hairs 0.1 mm long; pinnae stalked to 5 mm, ± inequilateral (proximal pinnae with basiscopic pinnules longer than acroscopic pinnules) to equilateral, ca. 10–12 pairs per blade, 11–15 X 6–9 cm, the largest with 8–10 pairs of inequilateral pinnules, these lobed nearly to costules at their bases, lobes oblong to deltate, toothed; veins free, pinnate, 3–5 pairs per segment; indument adaxially of erect hairs less than 0.1 mm long in rachial and costal grooves, abaxially the costae, costules, and veins with erect hairs 0.1 mm long, tissue between veins glabrous; sori pinnate in the ultimate segments, with subentire indusia 3–5 X 0.5–0.8 mm.A

Forma de crecimiento

Hierba

Forma de vida

TerrestreA

Nutrición

Autotrófica

Ejemplar revisado

Oax (only the type). Ver (Nee & Taylor 26270, NY).A

Distribución

México (país) EndémicoA

Elevación

1600 – 1750 mA

Tipo de vegetación

Bosque de neblina/mesófiloA

Categoría IUCN

No incluidaB

Categoría NOM-059-SEMARNAT-2010

No incluidaC

Estatus del taxón

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

Discusión taxonómica

The absence of scales on the stipes, rachises, and costae and the dense minute hairs on the stipes, rachises, costae, and veins abaxially distinguish this species from congeners in Mexico. Probably, it is most closely related to D. franconis, which it resembles in having inequilateral pinnules.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]