Stigmatopteris sordida (Maxon) C. Chr.
Descripción
Rhizomes short-creeping to suberect; rhizome scales dark brown, mostly 3–7 X 1–3 mm, margins entire to denticulate; fronds 70–100+ cm; stipes stramineous to brownish, ca. 1⁄2 the frond length; blades pinnate-pinnatifid; pinnae 15–20 pairs, (8–)13–23 X 1.3–4 cm, lobed (1⁄2–)2⁄3–3⁄4 their width, somewhat inequilateral at base (acroscopic segments longer, basiscopic segments more oblique), pinnules serrate in distal 1⁄3, proximal pinnae short-stalked, middle ones sessile to partially adnate, distal ones fully adnate and short-decurrent, only the distalmost few joined by a wing; rachises and costae abaxially with scattered to numerous tan, ovate-lanceolate, fibrillose scales 1–2 X 0.3–0.5 mm; adaxial costal grooves pubescent, hairs especially dense near pinna bases; veins (4–)6–11 pairs per segment, not united; sori (2–)5–10 pairs per segment.A
Forma de vida
TerrestreA
Ejemplar revisado
Chis (Ghiesbreght 288, YU; Purpus 6870, BM, MO, NY, UC, US). Oax (Mickel 6403, ENCB, NY, UC, US; Wendt et al. 5745, CHAPA, MEXU, NY). Ver (Lira 163, MEXU, UAMIZ, XAL; Ortíz y Martiniano 159, IEB, NY).A
Elevación
150 – 600(– 1000) mA
Tipo de vegetación
Selva altaA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Stigmatopteris chimalapensis was distinguished by its smaller blades, less deeply incised pinnae, and fewer veins per segment. These characteristics are unusually variable in Stigmatopteris, even on fronds from a single plant, and smaller variants have a tendency to become precociously fertile. A recent collection of typical S. sordida (Wendt et al. 5745, 13 km NE of Sta. María) from the vicinity of the type collection of S. chimalapensis further suggests that the two are conspecific.
Stigmatopteris sordida differs from S. longicaudata by the more deeply incised pinnae and the distal pinnae being only weakly or not at all decurrent onto the rachises.
A
Stigmatopteris sordida differs from S. longicaudata by the more deeply incised pinnae and the distal pinnae being only weakly or not at all decurrent onto the rachises.
A