Adiantum deflectens Mart.
Descripción
Rhizomes short-creeping to erect, 2–4 mm diam.; rhizome scales bicolorous, center dark brown, margins light brown, 2 X 0.1–0.3 mm, margins entire; fronds clumped, (8–)12–30 cm long, arching; stipes castaneous to atropurpureous, dull to sublustrous, to 15 cm X 0.5–0.8 mm, 1⁄4–1⁄2 the frond length, glabrous; blades lanceolate, 1-pinnate, tapering to apices, 2–5 cm wide; rachises castaneous, glabrous, outside Mexico occasionally flagelliform and rooting at tips; pinnae 3–10 pairs, alternate, stalked 3–8 mm, stalk color stopping ± abruptly at pinna bases, articulate; ultimate divisions (pinnae) cuneate-flabellate, asymmetrical to symmetrical, 12–14 mm long, blades usually with a ± conform terminal pinna, pinnae cleft or lobed to 3 mm deep, 2–7 lobes per pinna, sterile margins sharply serrulate; veins free, forking; ending in sharp and conspicuous teeth on sterile pinnae; indument absent on both sides of blades; idioblasts absent; sori 3–7 per pinna, confined to distal margins; indusia 1–5 mm long, oblong to slightly arcuate, glabrous.
A
A
Forma de vida
TerrestreA
Ejemplar revisado
Chis (Breedlove 27288, DS). Gro (Lorea 4773, FCME). Oax (Gallardo H. 1900, MEXU; Mickel 5974, NY, UC).A
Elevación
150 – 780 mA
Ecología y Hábitat
Lowland moist woods near streams.A
Tipo de vegetación
Selva bajaA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Estatus del taxón
(A) Como definida actualmente, probablemente una entidad natural (monofilética)A
Discusión taxonómica
This is often confused with A. lunulatum. Adiantum deflectens is distinct in its articulate pinnae, short pinna stalks, veins ending in teeth, and tan spores. The rather few Mexican specimens have pinnae that are not as sharply serrate as in South American material. Also, the Mexican specimens seen show no evidence of the rachises being prolonged and rooting at the tips, as is common elsewhere in the range of the species. The closest relatives of A. deflectens are a small group of South American species that include A. delicatulum Mart. in Brazil and Paraguay, A. calcareum Gardn. from the same two countries, and A. mendoncae Alston from Mozambique and Zimbabwe!.
A
A