Nephrolepis rivularis (Vahl) Mett. ex Krug
Descripción
Rhizomes erect, well developed, stoloniferous, lacking tubers; rhizome scales bicolorous, dark reddish brown, centers lustrous, margins tan, ciliate; stipes 8–30 cm long, brown, persistently scaly at bases; blades firm-herbaceous, linear, 50–200 X (7–)8.5–11 cm, somewhat narrowed at bases; rachises scaly with dense, castaneous, fibrillose scales 2–3 mm long; pinnae many, (8–)9–10 mm wide at bases, (6–)8–9 mm wide at mid-pinna, apices acute to acuminate, bases unequal, basiscopic sides cuneate, acroscopic sides each with an acute basal auricle, margins serrulate toward base, crenate-serrate toward tip; indument on both surfaces lacking or abaxially of sparse castaneous fibrillose scales 0.3–1 mm long; hydathodes lime-dotted on adaxial blade surfaces; indusia dark reddish brown, round-reniform, 0.8–1 mm diam., with distinct sinuses (mature sporangia projecting on all sides); 2n=82 (Trin).
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A
Forma de vida
Terrestre, EpífitaA
Ejemplar revisado
Chis (Collins & Doyle 92, US). Oax (Hallberg 1313, 1589, NY, US; Mickel 7162, NY, UC; Vera Santos 3423, ENCB, MICH, US). Ver (Schiede s.n., NY).
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A
Elevación
400 – 900 mA
Tipo de vegetación (notas)
On hardwood forest.A
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
The sparse, fibrillose scales on the abaxial blade surfaces, glabrous adaxial surfaces, cuneate pinnae basiscopically, bicolorous, ciliate rhizome scales, and densely scaly rachises distinguish this taxon. Mickel 6460 (NY), cited by Mickel and Beitel (1988: 256) as this species from Oaxaca, is N. pendula.A