Argyrochosma lumholtzii (Maxon & Weath.) Windham
Descripción
Rhizomes compact, erect; rhizome scales linear, 4–5 mm long, entire, somewhat contorted, orange-brown; fronds 7–15 cm long, clumped; stipes ca. 2⁄5 the frond length, terete, black, glabrous; blades deltate-lanceolate or deltate-ovate, bipinnate, herbaceous or subcoriaceous, glabrous, gray-green; rachises straight, terete, glabrous; pinnae 6–8 pairs; segments remote, orbicular or slightly oblong to subcordate, 3–4 mm diam., entire, the terminal deltate, non-articulate, the dark color of the stalks passing into the segment bases; segment margins unmodified, plane to slightly recurved; sporangia 64-spored, borne on the distal 1⁄2–1⁄3 of veins.A
Forma de vida
Usually epipetric.A
Ejemplar revisado
Son (Fishbein 4458, MO; Lloyd (Lumholtz Exped.) 489, GH).A
Distribución
México (país) EndémicoA
Elevación
1300 mA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Argyrochosma lumholtzii differs from A. jonesii by the blackish axes and the bipinnate blades (vs. castaneous to brownish axes and the blades 2–3-pinnate).A