Trichomanes diversifrons (Bory) Mett. ex Sadeb.
Descripción
Rhizomes stout, 4–5 mm diam., erect; rhizome hairs dark brown, 1–2 mm long; roots present; fronds strongly dimorphic, sterile fronds 10–35 cm long, fertile fronds 30–35 cm long, clumped; stipes 1⁄6–1⁄3 the sterile frond length, 1⁄2 the fertile frond length, stout, 1–1.3 mm wide, brown, alate in distal 1⁄4, bases with scattered dark brown hairs 1–2 mm long, glabrous otherwise; sterile blades pinnatifid, 3–5 cm wide, reduced proximally, apices pinnatifid, often with naked, extended rachises ending in proliferous tips; pinnae 12–36 pairs, 5–6 mm wide, glabrous except for rare, brown hairs 0.3 mm long, on rachises, margins serrate with teeth 0.3–0.5 mm; veins 2–3-forked, anastomosing, ending in teeth at margins, false veins absent; fertile fronds 5–9 mm wide, glabrous, veins simple to 1-forked, margins appearing denticulate; involucres immersed, contiguous, 1.5–2 mm long, 0.5 mm wide in middle, mouths 0.8 mm wide, concave.A
Forma de vida
TerrestreA
Ejemplar revisado
Chis (Breedlove 34109, DS; Ghiesbreght 442, K, NY, PH; Martínez S. 15901, MEXU). Oax (Croat & Hannon 63268, UC; Hernández G. 822, 1177, NY). Tab (Cowan 3990, NY, UC). Ver (Lorence et al. 3940, MEXU; Riba 804, UAMIZ; Wendt et al. 3845A, UC, 5305, NY).
A
A
Elevación
150 – 350 mA
Tipo de vegetación
Selva altaA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Trichomanes diversifrons is distinct in its strongly dimorphic fronds with undivided fertile blades, pinnatifid sterile blades, anastomosing veins, and concave involucral mouths.A