Parablechnum C.Presl

Primary tabs

Parablechnum C.Presl

Descripción

Rhizomes erect or suberect, sometimes subarborescent to decumbent, short-creeping, non-stoloniferous, stout, clothed with reddish to brown, bicolorous or concolorous, ovate or ovate-lanceolate, entire or denticulate scales one cell thick, sometimes covered by mucilage; fronds usually dimorphic, rarely monomorphic or subdimorphic; stipes stout, long, stramineous, light brown, or dark purplish, proximally with scales similar to those of rhizomes, scaly, rarely with twisted hairs; blades concolorous, oblong to lanceolate, 1-pinnate, bases truncate, apices conform; rachises glabrous or glabrescent to often densely scaly; buds absent or present in a few species; aerophores sometimes borne at the bases of pinnae abaxially; pinnae sessile or stalked, usually not articulate (articulate in P. articulatum), often falcate, oblong-linear, lanceolate, plane or revolute at margins, entire or finely denticulate; veins free, simple to 1furcate, clavate at tips adaxially, near pinna margins; sori linear, indusia subentire to lacerate or erose; x = 28, 31, 33.A

Forma de crecimiento

Hierba

Forma de vida

TerrestreA

Nutrición

Autotrófica

Distribución

Centroamérica PresenteB, México (país) Nativo y no endémicoB, Sudamérica PresenteB

Elevación

data unavailable

Tipo de vegetación

Bosque de neblina/mesófilo, Bosque de pino, Bosque de pino-encinoB

Categoría IUCN

No incluidaC

Categoría NOM-059-SEMARNAT-2010

No incluidaD

Estatus del taxón

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

Discusión taxonómica

The species of Parablechnum are characterized by the truncate laminae, 1-pinnate blades, and conform or subconform apices. The genus is most closely related to Lomariocyas and a clade formed by Neoblechnum, Oceaniopteris, and Doodia (Gasper et al. in press).A

Bibliografía

A. Gasper, V.A.O. Dittrich & Salino 2016: – Phytotaxa 275(3)
B. Mickel, J. T. & Smith, A. R. 2004: The Pteridophytes of Mexico Vol. 88
C. IUCN 2022: The IUCN Red List of Threatened Species. Versión 2022-2
D. 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]