Melpomene moniliformis (Sw.) A.R.Sm. & R.C.Moran
Descripción
Rhizomes moderately short- to long-creeping, 1–3 mm diam.; rhizome scales dark red-brown, 3–4 mm long, appressed, acute at tips; fronds somewhat distant to clumped; stipes dark brown to blackish, 1–5 cm long, 1⁄8–1⁄4 the frond length, lacking setae but with abundant, pale, branched hairs 0.2–0.3 mm long; blades linear, 3–15 X 0.5–1 cm, slightly reduced proximally, gradually tapering distally; rachises lacking setae, with a few scattered small glandular hairs abaxially, glabrous adaxially; pinnae 22–40 pairs, semicircular to deltate, 2–4 mm long, often broader than long, spreading to very slightly ascending, obtuse at tips, alternate and often appearing zig-zag; costae not visible abaxially; indument abaxially absent or of very sparse short hairs on costae; sori 1–2(–3) pairs per pinna, lacking setae among the sporangia, rarely with 1–3(–10) setae; 2n=ca. 148 (Jam).A
Forma de vida
TerrestreA
Ejemplar revisado
Chis (Matuda 2380, K, MEXU, US). DF (Lyonnet 3244, MEXU). Gro (Hinton 14294, ARIZ, LL, MO, NY, TEX). Hgo (Lyonnet 510900006, CAS, MEXU). Jal (McVaugh 11649, MEXU). Mor (Sánchez 463, MEXU). Mich (Zamudio 3917, ENCB, IEB). Oax (Pringle 6194, MO, NY, UC). Tlax (Acosta P. & Sánchez 2970, CIB). Ver (Müller 29, NY).
Unverified, Doubtful, or Mistaken Reports. Méx (reported by Mickel & Beitel, 1988, but not verified; Sandoval 131, UAMIZ, cited by Tejero-Díez & Arreguín-Sánchez, 2004, from the México/Morelos border, but not verified).
A
Unverified, Doubtful, or Mistaken Reports. Méx (reported by Mickel & Beitel, 1988, but not verified; Sandoval 131, UAMIZ, cited by Tejero-Díez & Arreguín-Sánchez, 2004, from the México/Morelos border, but not verified).
A
Elevación
2150 – 4000 mA
Ecología y Hábitat
On mossy rocks at high elevations.A
Tipo de vegetación
Bosque de oyamelA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
This species, M. flabelliformis, and M. deltata form a species complex lacking hairs on the adaxial surface of the rachises and having creeping rhizomes. Melpomene flabelliformis also has pinnae perpendicular to rachises, but the numerous hairs in the sori, scattered hairs on the abaxial side of the rachises, and longer pinnae contrast with the 0–3 hairs per sorus, essentially glabrous abaxial surface of the rachises, and shorter pinnae of M. moniliformis. The strongly ascending, deltate segments and totally glabrous sori of M. deltata distinguish that taxon from the more common M. moniliformis.
Breedlove 40337 (DS), collected on rocks, is a mixed collection of this species and M. deltata, and highlights their differences. Matuda 2889 (MEXU), from Volcán Tacaná in Chiapas, is aberrant in having 5–10 setae ca. 1–1.5 mm long within nearly all sori and also a few similar setae on the abaxial blade tissue of non-soriferous segments; in blade cutting, however, it is not unlike more typical specimens of M. moniliformis.
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Breedlove 40337 (DS), collected on rocks, is a mixed collection of this species and M. deltata, and highlights their differences. Matuda 2889 (MEXU), from Volcán Tacaná in Chiapas, is aberrant in having 5–10 setae ca. 1–1.5 mm long within nearly all sori and also a few similar setae on the abaxial blade tissue of non-soriferous segments; in blade cutting, however, it is not unlike more typical specimens of M. moniliformis.
A