Meniscium serratum Cav.
Descripción
Rhizomes short-creeping; fronds to ca. 200 cm long or more; blades 1-pinnate, each with a lanceolate terminal pinna, distal pinnae gradually shortened, buds occasionally borne in axils of proximal pinnae; pinnae 15–25 pairs, the proximal ones shortstalked to 4 mm, largest 15–25 X (2–)2.5–3.5(–4.5) cm, the margins serrate or uncinate-serrate, fertile pinnae often somewhat narrower than sterile ones; lateral veins producing arcuate or subsigmoid secondary veins, with 10–15 pairs anastomosing and giving rise to short excurrent veinlets, the areoles much shorter than broad; indument abaxially of hairs ca. 0.2 mm long on costae, costules, and sometimes veins and tissue between veins, adaxially glabrous except for the sparsely hairy costae; sori arcuate, along veins at anastomoses; sporangia glabrous; 2n=72 (Fla, Trin).A
Forma de vida
TerrestreA
Ejemplar revisado
(Related to the synonym Thelypteris serrata) Chis (Gilly & Hernández X. 163, MICH, MSC, US; Ventura A. 21352, ENCB, XAL). Gro (Fonseca J. 1076, FCME). Nay (Ortega 75, US). Oax (Mickel 6816, NY; Torres C. 8033, MEXU). Pue (Sánchez M. 907, MEXU). QR (Torres 636, UAMIZ). Ver (King 997, LL, TEX, US; Purpus 8602, DS, MO, NY, UC). Tab (Cowan 3301, CAS, CHAPA).A
Elevación
0 – 550 mA
Ecología y Hábitat
Wet roadside banks and swamps, sometimes in standing water.A
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
(In relation to synonym Thelypteris serrata) This differs from the other Mexican species of subg. Meniscium by the uncinate-serrate pinna margins and the gradually reduced distal pinnae, each blade terminating in a relatively small narrowly deltate terminal pinna. The specimen cited from Nayarit is juvenile, sterile, and not determinable with certainty.A