Pecluma plumula (Willd.) M.G.Price
Descripción
Rhizomes short-creeping, 3–7 mm diam.; rhizome scales reddish brown, dark towards margins, lanceolate, acuminate, margins toothed, papillose; fronds 8–60 cm long, clumped; stipes black, 1⁄8–1⁄3 the frond length, glabrous; blades narrow to linear elliptic, 3–11 cm wide, reduced to lobes at bases, the reduced lobes spreading, not deflexed; rachises abaxially with orangish to red-brown, ovate to lanceolate, sometimes bullate scales, margins toothed, papillate or fimbriate, also with a few septate hairs to 0.5 mm; pinnae linear-obtuse, 1.5–3(–6) cm X 1.5–3.5 mm, surcurrent and decurrent, costae black, decurrent onto rachises; veins free, mostly 1-forked; indument adaxially of sparse hairs 0.1–0.3 mm on costae, laminar surfaces glabrous or nearly so, abaxially the costae with sparse septate hairs 0.3–0.5 mm and scattered bullate scales 0.5 mm long, laminar surfaces between veins with scattered appressed hairs, margins with a few hairs 0.2–0.5 mm; sori round, medial, with clavate paraphyses to 0.5 mm; sporangia with hairs 0.1 mm on capsules; spores reniform, 64 per sporangium; 2n=148 (Fla, Jam).A
Forma de vida
Epífita, o Epipétrica. TerrestreA
Ejemplar revisado
Camp (Collins 50, US). Chis (Breedlove 40159, DS). Hgo (Moore 1970, UC). Oax (Mickel 6115, ENCB, MEXU, NY, UC, US). Pue (Rzedowski 23374, DS). Qro (Rubio 2626, IEB). QR (Sanders 9840, UC). SLP (Rzedowski 27692, NY). Tam (Stanford et al. 985, ARIZ, DS, MEXU, NY, UC, US). Ver (Copeland herb. 126, BM, GH, MEXU, MICH, UC).
Unverified, Doubtful, or Mistaken Reports. Gro (Urbina 46, FCME, cited by Lorea-Hernández & Velázquez M., 1998, but not verified). Gto (Rzedowski 40576, IEB, cited by Díaz-Barriga & Palacios-Rios, 1992, but not verified). Mich (Arsène 6696, MEXU, and Rzedowski 40576, 42127, IEB, cited by Díaz-Barriga & Palacios-Rios, 1992, but not verified). Sin (reported by Mickel & Beitel, 1988, probably on the basis of Dunn et al. 21813, ENCB, NY, but the specimen is P. alfredii, probably var. occidentalis).
A
Unverified, Doubtful, or Mistaken Reports. Gro (Urbina 46, FCME, cited by Lorea-Hernández & Velázquez M., 1998, but not verified). Gto (Rzedowski 40576, IEB, cited by Díaz-Barriga & Palacios-Rios, 1992, but not verified). Mich (Arsène 6696, MEXU, and Rzedowski 40576, 42127, IEB, cited by Díaz-Barriga & Palacios-Rios, 1992, but not verified). Sin (reported by Mickel & Beitel, 1988, probably on the basis of Dunn et al. 21813, ENCB, NY, but the specimen is P. alfredii, probably var. occidentalis).
A
Elevación
150 – 1500(– 2100) mA
Ecología y Hábitat
Open rocky limestone slopes.A
Tipo de vegetación
Bosque de pino-encino, Bosque de encino, Selva altaA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Pecluma plumula is distinct from congeners in Mexico by the combination of black stipes, lanceolate, toothed rhizome scales, proximal pinnae a little shortened but not deflexed, persistent lanceolate rachis scales, and setulose sporangia. Hernández G. 755 (MEXU), cited by Mickel and Beitel (1988) as this species, is P. dispersa.A