Amauropelta thomsonii (Jenman) Pic.Serm.
Descripción
Rhizomes erect, massive; fronds large, to 250 cm long; stipes stramineous to tan, mucilaginous when young, to 50 cm X 6–10 mm, with numerous, partly appressed, tan scales to ca. 8 X 5 mm; blades to 200 X 60 cm, proximal pinnae abruptly reduced toward bases, with numerous wart-like pinnae less than 5 mm long, blades lacking proliferous buds; pinnae to 32 X 2–4.4 cm, deeply incised to within 1 mm of costae, proximal pinnae somewhat narrowed at bases; aerophores prominent, scale-like, to 6 mm long at bases of costae abaxially, smaller aerophores to 1 mm long often at bases of costules; segments 3–5 mm wide, acute to rounded at tips; veins to 25 pairs per segment, meeting the margins above the sinuses; indument abaxially of dense fasciculate hairs ca. 0.1 mm long on rachises, costae, and costules, tissue with numerous reddish, sessile, hemispherical, resinous glands; sori medial, with small indusia nearly obscured by dense reddish glands like those of blades; sporangia glabrous; 2n=116 (Jam).A
Forma de vida
TerrestreA
Ejemplar revisado
(Related to the synonym Thelypteris thomsonii) Chis (Breedlove 23121, 31981, 31986, 32345, 32683, 33695, DS). Oax (Smith 499, UC).A
Elevación
1700 – 2300 mA
Ecología y Hábitat
Along trails in woods.A
Tipo de vegetación
Bosque de neblina/mesófiloA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
(In relation to the synonym) Thelypteris thomsonii is readily distinguished by the combination of dense, fasciculate hairs on rachises and costae abaxially, and scale-like aerophores at the bases of costae and costules.A