Cochlidium serrulatum (Sw.) L.E. Bishop, Amer. Fern J. 68: 80. 1978; Acrostichum serrulatum Sw. Fig. 32 C, D.
Rizoma ascendente, con escamas 3–4 mm de largo, café-anaranjadas; hojas dimorfas; pecíolo ca 1.5 cm de largo, oscuro en la base, verdoso distalmente; láminas lineares, 2–8 cm de largo y 1–2.5 mm de ancho, las fértiles más largas, rectas o falcadas, planas o conduplicadas, profundamente pinnatífidas, subenteras a sinuadas en la porción distal de las hojas fértiles; nervios fácilmente visibles sólo en las hojas jóvenes estériles; hidátodos inconspicuos; soros solitarios en la base de una vena, confluentes en la madurez hasta formar 1 hilera densa a lo largo del raquis (soro coclidioide) y que ocupa todo el ancho de la lámina fértil y la porción distal de una lámina fértil modificada.
Nebliselvas, bosques húmedos, bosques enanos y pluvioselvas; Moreno 9122, Stevens 18677; 0–1650 m; México a Bolivia y Brasil, las Antillas, áfrica tropical, Madagascar e Isla Mauricio. NT
Rhizome creeping; rhizome scales concolorous orange-brown, ovate-lanceolate, 1-1.3 mm long; fronds distant; stipe ca. 1/8 the frond length, dark brown base (1 -2 mm), the color changing abruptly to green, glabrous; blades dimorphic, sterile blade shorter, deeply pinnatifid, 10-20 mm long, 2-3 mm wide, segments 1-1.5 mm long, fertile blade dimorphic, longer, 35-60 mm long, fertile in terminal half, basal sterile part pinnatifid, 25-35 mm long, 1-1.5 mm wide, the pinnae ascending, debate, 0.8-1 mm long, glabrous except for very sparse minute pale hairs; fertile part terminal, subentire to undulate, 10-25 mm long, 1.8-2.3 mm wide; sori basal on unbranched veins, appearing nearly costal, glabrous, the lamina folded somewhat.
Rhizomes ascending; rhizome scales orange-brown, 1–1.3 mm long; stipes to ca. 1.5 cm long, dark brown at very base, green distally, glabrous; blades dimorphic, sterile blades shorter, deeply pinnatifid, 10–20 x 2–3 mm, segments 1–1.5 mm long; fertile blades longer, 35–60 mm long, fertile in distal half, basal sterile part pinnatifid, 25–35 x 1–1.5 mm, the segments ascending, deltate, 0.8–1 mm long, chartaceous, glabrous; veins evident on both sides of blades; hydathodes none or not readily visible; sori basal on unbranched veins, appearing nearly costal but not in deep grooves, the blades somewhat folded (conduplicate); 2n=ca. 105 (Jam, Trin), 140 (Jam).
Rhizomes 1—2 cm long. Fronds numerous, sessile, linear, 2-5 cm long, the margins dentate; veins simple. Sori linear, slightly wider at apex than at base, confined to apical part of frond. Usually in cloud forests but sometimes in riverine vegetation at lower altitudes.
Stem: rhizome erect; rhizome scale over 2.0 mm. Leaf: frond hemidimorphic; leaf serrulate; fertile portion of the leaf conduplicate; leaf texture chartaceous; costa not evident; veins simple; hydathode absent ( obscure ); sori not sulcate; sori forming cenosore.
Caule: rizoma(s) ereto(s); rizoma(s) escama(s) sobre 2.0 mm. Folha: fronde(s) hemidimórfica(s); folha(s) serrulada(s); fértil(eis) porção da folha(s) conduplicada(s); folha(s) textura cartácea(s); costa(s) não evidente(s); nervura(s) simples; hidatódio(s) ausente(s) ( obscura(s) ); soro(s) não sulcada(s); soro(s) formando cenosoro.
Tallo: rizoma(s) erecto(s); rizoma(s) escama(s) sobre 2.0 mm. Hoja: fronde(s) hemidimórfica(s); hoja(s) serrulada(s); fértil(es) porcion de la hoja(s) conduplicada(s); hoja(s) textura cartacea(s); costa(s) no evidente(s); nervura(s) simples; hidátodo(s) ausente(s) ( obscura(s) ); soro(s) no sulcada(s); soro(s) formando cenosoro.
Epiphytic or terrestrial on mossy banks of the Atlantic side; Choapan, Ixtlán, Mixe, Tehuantepec, Teotitlán, Tuxtepec, Villa Alta; 300-1850 m. Mexico (Pue, Ver, Oax, Chis), Guat to Pan; WI, Trin, Tob; Ven & Col to Bol & s Braz; trop. Africa, Madag, Mauritius.
Epiphytic or terrestrial on mossy banks of the Atlantic slope; 150–1850 m. Mexico; Guat, Bel, Hond, Salv (Seiler 1004, NY), Nic, CR, Pan; Gr & L Ant; Col, Ven, Trin, Guy (Gillespie 2764, TEX), Ec, Galapagos, Peru, s Braz, Bol; tropical Africa, Madagascar, Mauritius.
