Amauropelta melanochlaena (C.Chr.) Salino & T.E.Almeida
Descripción
Rhizomes suberect; fronds to 110 cm long; stipes stramineous, 5–15 cm X 2.5–3.5 mm, deciduously pubescent; blades 60–100 X 8–22 cm, with 7–14 pairs of gradually reduced pinnae proximally, lacking proliferous buds; pinnae to 45 pairs, 4–12 X 1.2–2.2 cm, deeply pinnatifid to within 1 mm of costae; aerophores absent or essentially so; segments patent or slightly oblique, ca. 2–3.5 mm wide, rounded or subacute at apices; veins 7–10 pairs per segment; indument abaxially of patent hairs 0.2–0.3 mm long on rachises, costae, scales absent, tissue between veins with numerous patent hamate hairs ca. 0.2 mm long, adaxially the blades with adpressed hairs ca. 0.1 mm long between veins; sori supramedial to submarginal, with indusia thick, dark brown to blackish, lustrous, margins ciliate or hamate-hairy; sporangia glabrous; 2n=116 (Chis).A
Forma de vida
TerrestreA
Ejemplar revisado
(Related to the synonym Thelypteris melanochlaena) Chis (Breedlove 21842, 28113, 31310, 34654, DS). Oax (Hallberg 1590, NY, UC; Mickel 4867, NY, 5110, MEXU, NY). Ver (Purpus 4340, UC; Ventura A. 8141, MEXU, 19431, CHAPA, ENCB).A
Elevación
800 – 2500 mA
Ecología y Hábitat
Roadbanks.A
Tipo de vegetación
Bosque de pino-encinoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
(In relation to the synonym) Thelypteris melanochlaena is closely related to T. scalaris and differs from that species primarily by the dark brown to black, thick, opaque indusia. We have not observed buds in the pinna axils of T. melanochlaena, whereas such buds are commonly found in Mexican specimens of T. scalaris.A