Asplenium myriophyllum (Sw.) C. Presl
Descripción
Roots thin, fibrous, proliferous; rhizomes erect; rhizome scales blackish, clathrate, but lumina small, occluded, 0.8–1.5 X 0.5–0.7 mm, entire; fronds clumped, 6–30 cm long; stipes reddish brown to gray-green, dull, 1–12 cm X 0.5–1 mm, ca. 1⁄10(–1⁄3) of frond length, glabrous, wings seemingly absent; blades membranaceous, elliptical, 5–25 X 2.5–8 cm, 3-pinnate, tapering proximally and distally, apices elongate, non-conform, not proliferous; rachises reddish brown to gray-green, dull, glabrous, adaxially with narrow green wings 0.1–0.2 mm wide; pinnae broadly lanceolate, 10–20 pairs, 1.5–6 X 1–2 cm, sessile to stalked to 2 mm, 2-pinnate, ultimate segments obovate to elliptical, ca. 1 mm wide, narrowed proximally, apices acute, non-falcate; veins 1 per ultimate segment, tips evident adaxially; indument abaxially of scattered, tan, appressed clavate hairs 0.1–0.2 mm long; sori 1 per ultimate segment; indusia 1–1.5(–2) X 0.5–0.8 mm, margins entire; spores reniform; 2n=144 (USA).A
Forma de vida
Terrestre or epipetricA
Ejemplar revisado
Chis (Breedlove 22302, 31539, 34697, DS). DF? (Valle de México, Schaffner 105, NY). Oax (Mickel 3818, MEXU, NY, UC, 5350, ENCB, NY, UC, US, 5369, ENCB, MEXU, NY, UC). Ver (Bourgeau 2002, MO, 3059, MO, US; Pringle 6094, LL, NY, UC, US).A
Elevación
700–2700 mA
Ecología y Hábitat
On limestone.A
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
This species was treated as Asplenium divaricatum Kunze (Linnaea 9: 71. 1834, type from Peru, Cerro de San Cristóbal, prope Cassapi, Poeppig [1151], isotypes B!, NY!, P!, W) by Mickel and Beitel (1988), but Smith (1981) and Tryon and Stolze (1993), restricted the application of A. divaricatum to plants from Peru. Adams (in Davidse et al., 1995) circumscribed A. divaricatum more broadly, to include plants from Guatemala, Trinidad, Brazil, and Chile, but he did not admit Mexico in the range. Putative hybrids, intermediate in morphology between the suspected parents, occur between A. myriophyllum and A. cristatum: Mickel 7301B, NY, from Oaxaca. In Florida, Asplenium myriophyllum hybridizes with A. abscissum to form A. curtissii Underw.
See discussion under A. cristatum and A. rutaceum for differences with those taxa.
A
See discussion under A. cristatum and A. rutaceum for differences with those taxa.
A