Asplenium serratum L.
Descripción
Roots coarse, fibrous, forming a dense mat, not proliferous; rhizomes erect, clothed with dense mass of roots and old leaf bases; rhizome scales black, clathrate, (4–)8–20 X 1–2 mm, margins with retrorse hairs with attenuate or filiform tips; fronds clumped, (25–)40–100 cm long; stipes blackish or brown to greenish, dull, usually less than 2 cm (occasionally to 10 cm) X 2–5 mm, glabrous, alate; blades thick herbaceous, simple, unlobed, 35–75(–95) X (4–)6–10(–14) cm, narrowly oblanceolate, bases long-cuneate, tips acute, margins crenate to finely serrulate, bearing tan scales along both sides of rachises, especially abaxially; rachises greenish, dull, abaxially with scattered scales 1–3.5 mm; pinnae none; veins simple or often 1-forked near their bases, running ± parallel to each other, usually visible on both sides, tips evident or not adaxially; indument abaxially of scattered, tan pectinate scales 0.3–0.5 mm long on and between veins; sori 100+ pairs per blade, parallel and at ca. 70° from the midribs, often confined to the proximal 1⁄3–2⁄3 of veins portion of blades; indusia whitish, (5–)12–25 X 0.4–0.5 mm, margins entire; spores reniform; 2n=144 (Fla), ca. 288 (Trin).
A
A
Forma de vida
Epipétrica, EpífitaA
Ejemplar revisado
Chis (Breedlove 48333, CAS; Martínez S. 10669, MO; Stevens & Martínez 25893, MO, NY, UC). Oax (Croat & Hannon 63285, MO, UC; Mickel 5845, MEXU, NY).Tab (Cowan 3155, MO; Croat 40101, MO, UC; Davidse et al. 29492, MO, UC). Ver (Finck 166, UC; Nee 30012, MO).
Unverified, Doubtful, or Mistaken Reports. QR (Trejo et al. 113, UADY, cited by Palacios-Rios, 2002c, but not verified).A
Unverified, Doubtful, or Mistaken Reports. QR (Trejo et al. 113, UADY, cited by Palacios-Rios, 2002c, but not verified).A
Elevación
50 – 1200 mA
Ecología y Hábitat
Atlantic slope.A
Tipo de vegetación
Selva alta, Bosque de neblina/mesófiloA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
Amenazada (A)C
Discusión taxonómica
Asplenium serratum is easily distinguished from congeners in Mexico by the simple, nest-forming fronds. The only other simple-bladed asplenioids in Mexico are A. scolopendrium, with sori in pairs facing one another and cordate blade bases, Holodictyum, which has reticulate venation, and Schaffneria, with rounded blades and atropurpureous, lustrous stipes.A