Ctenitis submarginalis (Langsd. & Fisch.) Ching
Descripción
Rhizomes erect, stout, caudices to 3 cm diam.; fronds to ca. 100 cm long; stipes stramineous to tan, 1⁄4–2⁄5 the frond length, 20–30(–45) cm X 3–5 mm, scales at bases brown or orangebrown, linear, 10–20 X 0.5–1.5 mm; blades green, 1-pinnatepinnatifid, oblong-lanceolate, ca. 50–70 X 20–35 cm; rachises abaxially with twisted, flat scales 1–4 X 0.1–0.3 mm; pinnae to ca. 20–25 pairs, the proximal ones stalked to ca. 2(–6) mm, the distal ones sessile, mostly 10–18 X 1.5–2.5(–3) cm, linear-oblong, not basiscopically enlarged, incised 1–3 mmfrom costae; segments entire or minutely crenulate toward tips, often apiculate, margins ciliate with jointed hairs to 0.5 mm long; veins simple, 8–15 pairs per segment, reaching the margins above the sinuses or the lowermost pair from adjacent segments running to the sinus; indument on costae abaxially of scattered, twisted, appressed, subentire or denticulate scales 1–4 X 0.1–0.3 mm and also minute, glandular hairs less than 0.1 mm long; laminae between veins abaxially with a few lax hair-like scales 0.1–0.3 mm long, also with appressed to spreading, yellowish, cylindrical or capitate glandular hairs less than 0.1 mm long; sori medial, exindusiate, or indusia very small, minutely ciliate, caducous or generally completely hidden by mature sporangia; 2n=82 (USA).A
Forma de vida
TerrestreA
Ejemplar revisado
Chis (Breedlove 31352, DS). Hgo (Copeland herb. 18, MEXU, UC, US; Moore 5087, UC, US). Oax (Mickel 1091, ISC, US). Qro (Rzedowski 46569, IEB, XAL). Ver (Finck 36, MEXU; Langman 3431, MEXU, US; Müller 142, NY; Purpus 16477, US; Vásquez T. 369, XAL).A
Elevación
1000 – 1600 mA
Tipo de vegetación
Bosque de neblina/mesófilo, Selva altaA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
From other pinnate-pinnatifid species, C. submarginalis differs by the exindusiate sori or sori with very small, ephemeral indusia, reddish, flattened (vs. inrolled) costal scales, and pinnae incised 3⁄4 their width or more. All but one of the specimens cited by Smith (1981: 84) from Chiapas as this species are C. microchlaena, a close relative (which see).
In Mexico, C. submarginalis is relatively common only in Veracruz; elsewhere it is rarely collected or seemingly absent.
A
In Mexico, C. submarginalis is relatively common only in Veracruz; elsewhere it is rarely collected or seemingly absent.
A