Ctenitis interjecta (C.Chr.) Ching
Descripción
Rhizomes suberect to erect, caudices stout, to 3 cm diam.; fronds to ca. 100 cm long; stipes tan, ca. 1⁄3–1⁄2 the frond length, to ca. 40 cm X 5 mm, bases with a dense mat of orangish tan, non-clathrate, linear, twisted, tangled, and flaccid scales 10–25 X 0.2–0.5 mm; blades green, broadly ovate, 2-pinnate-pinnatisect, proximal pinna pair only slightly exaggerated basiscopically, 30–50+ X 30–40 cm; rachises abaxially with scattered tan scales to ca. 2 X 0.3 mm, also with a few jointed hairs and some even shorter glandular hairs ca. 0.1–0.2 mm long; pinnae ca. 10–12 pairs, 15–25 X 6–8 cm, the proximal and longest pairs stalked to 1.5 cm, pinnules to ca. 6 X 1.8 cm, the largest pinnatifid to pinnatisect; segments entire to minutely toothed, rounded to acute at tips, margins eciliate; veins unbranched, ending just short of the margins above the sinuses; indument on costae and costules abaxially of scattered, light tan, flattish to basally incurled scales to 1.5 X 0.3 mm, also with a few glandular hairs 0.1–0.2 mm; laminae between veins glabrous on both sides, or with sparse glands abaxially; sori medial, with very small (0.2–0.3 mm diam.) tan indusia, often hidden in mature sori, indusia minutely glandular at the margins, or indusia seemingly absent.A
Forma de vida
TerrestreA
Ejemplar revisado
Chis (Breedlove 34078, DS; Martínez S. 17172, MEXU, 24928, UC; Palacios-Rios 2844A, UC, XAL). Oax (Hallberg 1609, NY; Hernández G. 1250, CHAPA, NY; Mickel 7164, 7176, NY). Ver (Nee & Calzada 22752, NY).
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Elevación
(150 –)1000 – 1450 mA
Tipo de vegetación
Bosque de neblina/mesófilo, Selva altaA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Ctenitis interjecta is similar to C. equestris, but differs in the rhizome apices and stipe bases with dense mat of orangish, linear or filiform scales, eciliate ultimate segments, veins ending before reaching the margins, rachis and costal scales tan, concolorous, not heavily clathrate, somewhat vaulted and with erosedenticulate margins, and pinnae adaxially with sparse, jointed hairs 0.3–0.5 mm long on the veins. It also occurs at generally lower elevations than C. equestris. From C. melanosticta, C. interjecta differs in the orangish rhizome scales 0.1–0.3 mm wide, tan flat costal scales, and exindusiate sori (or indusia small and caducous). From C. excelsa, with which it agrees in having eciliate segment margins, C. interjecta differs in the proximal pinnae stalked usually less than 1 cm (vs. 3–10 cm) and not exaggerated basiscopically, pinnules sessile or often partially adnate (vs. shortstalked), and lighter colored, narrower scales not conspicuously aggregated in the pinna axils. Ventura A. 10731 (XAL), cited as this species by Palacios-Rios (1992), is C. grisebachii.
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