Pelazoneuron tuerckheimii (Donn.Sm.) A.R.Sm. & S.E.Fawc.
Descripción
Rhizomes creeping, stout; fronds 60–175 cm long; stipes 30–85 cm X 4–10 mm, bearing dense brown or light brown, ovatelanceolate, glabrous scales to ca. 10 mm long; blades coriaceous to subcoriaceous, (30–)45–90 X (16–)25–55 cm, tapering evenly toward the short-pinnatifid apices; pinnae (8–)12–28 X 1.3–3 cm, proximal pair the largest, incised ca. 0.7–0.8 the way to the costae, often strongly auriculate at bases; segments subfalcate, mostly 3–5 mm wide, the margins often strongly revolute; veins 10–18 pairs per segment, proximal pair from adjacent segments connivent at sinuses; indument abaxially of numerous ovate to lanceolate scales on rachises, costae, and costules, also rather densely hairy on rachises, costae, costules, veins, and tissue between veins, hairs 0.5–1 mm long; sori medial, with hairy indusia, hairs mostly 0.3–0.5 mm; 2n=72 (Chis).A
Forma de vida
TerrestreA
Ejemplar revisado
(Related to the synonym Thelypteris tuerckheimii) Chis (Breedlove 22336, 27938, 29577, 32150, 33426, 34680, DS, 48263, 57110, CAS; Carlson 1836, US; Riba 1501, UAMIZ). Oax (Geith 95-M034, NY).A
Elevación
400 – 2700 mA
Ecología y Hábitat
Fissured limestone slopes, sink holes, banks, margins of forests.A
Tipo de vegetación
Bosque de neblina/mesófilo, Bosque de pino-encinoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
(In relation to the synonym Thelypteris tuerckheimii) Usually, this is easily distinguished from all other species of subg. Cyclosorus by its densely and persistently scaly stipes and rachises. However, some specimens from Chiapas are less scaly than the Guatemalan type and approach T. ovata var. lindheimeri. A putative hybrid between T. tuerckheimii and T. puberula is mentioned under the latter species.A