Pecluma atra (A.M.Evans) M.G.Price
Descripción
Rhizomes short-creeping, 4–6 mm diam.; rhizome scales reddish brown, 3 X 0.5–0.8 mm, lanceolate, comose, entire; fronds 20–65 cm long, clumped; stipes black, 1/6–2/5 the frond length, with spreading hairs 0.1–0.2 mm; blades narrowly oblong, 6–12 cm wide, slightly reduced at bases, deflexed, sometimes to auricles; rachises abaxially with reddish brown, linear-deltate scales; pinnae linear-deltate, 3–6 cm X 3–7 mm, obtuse, surcurrent in proximal half of blade, costae of proximal pinnae at right angles to the rachises; veins free, 1–2-forked; indument adaxially of sparse to moderately dense hairs 0.1–0.2 mm on costae, laminar surfaces with scattered septate hairs 0.3–0.6 mm, abaxially the costae with scattered hairs 0.2–0.5 mm, surfaces between veins with numerous appressed hairs 0.1–0.2 mm, margins with scattered hairs 0.3–0.5 mm; sori round, medial, with clavate paraphyses 0.3 mm; sporangia glabrous or some with hairs ca. 0.1 mm; spores reniform, 64 per sporangium.A
Forma de vida
o Epipétrica. TerrestreA
Ejemplar revisado
Chis (Breedlove 21926, DS, MEXU, NY, 38180, 38680, DS). Oax (Martínez-Calderón 693, ENCB; Mickel 6823, ENCB, UC, US; Orcutt 5211, DS). Qro (Carranza & Díaz B. 4723, IEB). Tab (Matuda 3372, MEXU, US). Tlax (Velázquez s.n., ENCB). Ver (Copeland herb. 124, BM, MEXU, MICH, NY, UC, US).
Unverified, Doubtful, or Mistaken Reports. Camp (Ortega & Ucán Ek’ 1309, XAL, cited by Palacios-Rios, 2002a, but not verified).
A
Unverified, Doubtful, or Mistaken Reports. Camp (Ortega & Ucán Ek’ 1309, XAL, cited by Palacios-Rios, 2002a, but not verified).
A
Elevación
0 – 1150(– 2250) mA
Ecología y Hábitat
Often on limestone.A
Tipo de vegetación
Bosque de neblina/mesófilo, Selva altaA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Among the Pecluma species with black stipes, P. atra is distinct in its scattered adaxial blade hairs and slender, entire rhizome scales. Its closest ally is P. dispersa, which is the apogamous triploid hybrid with P. plumula as the other parent.A