Elaphoglossum longistipitatum A.Rojas
Descripción
E. longistipitatum ab E. latifolio rhizomate tenuiori, squamis rhizomatis brevioribus, stipite longiori, necnon fronde fertili latiori et longiori differt.
Rhizomes short to long-creeping, 3-6 mm diam; rhizome scales 3-10 x 1-2 mm, ovale to linear-lanceolate, orange-yellowish with blackish central zone, light, dull, dense, margins entire; phyllopodia distinct, 1-3.5 cm long; fronds 20-46(62)cm long, spaced 0.3-1.0 cm apart; stipes (1/5)1/3-1/2 of the frond length; basal stipe scales 3-5 mm long, gradually reduced to 1 mm near to apex of stipe, yellow-orange to blackish, with small irregular teeth; blades 15-26(-38) x (3-)4.5-7 cm, elliptic to lanceolate, coriaceous, base cuneate to obtuse, apex acule to acuminate; blade scales sparse, minute, stellate with blackish central body; basal costal scales to 1 mm; veins obscure to evident, free, simple to 2-forked, ca. 1 mm apart, diverging at 60-70° angle from costa; hydathodes lacking; fertile fronds 20-62 cm long; stipes 2/5-2/3 of the frond length; blades 12-20 x 2.2-5.5 cm, lanceolate to elliptic, base narrowly to broadly cuneate, apex acute; intersporangial scales lacking.A
Rhizomes short to long-creeping, 3-6 mm diam; rhizome scales 3-10 x 1-2 mm, ovale to linear-lanceolate, orange-yellowish with blackish central zone, light, dull, dense, margins entire; phyllopodia distinct, 1-3.5 cm long; fronds 20-46(62)cm long, spaced 0.3-1.0 cm apart; stipes (1/5)1/3-1/2 of the frond length; basal stipe scales 3-5 mm long, gradually reduced to 1 mm near to apex of stipe, yellow-orange to blackish, with small irregular teeth; blades 15-26(-38) x (3-)4.5-7 cm, elliptic to lanceolate, coriaceous, base cuneate to obtuse, apex acule to acuminate; blade scales sparse, minute, stellate with blackish central body; basal costal scales to 1 mm; veins obscure to evident, free, simple to 2-forked, ca. 1 mm apart, diverging at 60-70° angle from costa; hydathodes lacking; fertile fronds 20-62 cm long; stipes 2/5-2/3 of the frond length; blades 12-20 x 2.2-5.5 cm, lanceolate to elliptic, base narrowly to broadly cuneate, apex acute; intersporangial scales lacking.A
Forma de vida
Epífita, TerrestreA
Ejemplar revisado
Barranca below Ho ney Station, 5500 ft., Pringle s. n. (UC). Chiapas: Municipio of San Cristóbal Las Casas, steep slope on Cerro Huitepec (Muk' ta vits) W of San Cristóbal Las Casas, 2700 m, Breedlove & A. R. Smith 23036 & 32038 (MEXU); a lo largo de la carretera 195 entre Bochil y Pichucalco, 8 millas NW de Pueblo Solistahuacan, 1900-1950 m, Croat 46367 (MO, CR); a long gravel road leading para main blacktop road to Lagos de Montebello to Dos Lagunas, Km 4.5, 1480 m, Croat 46596 (MO); Municipio de Unión Juárez, en el Volcán Tacana, entre Talquian y la Cima del Volcán, 1600-2400 m, E. Martínez et al. 13214 (MEXU). México: Distrito Teemascaltepec, La Sierrita, G. B. H. 3455 (UC). Oaxaca: Distrito Villa Alta, Valley of the Yelagago River, ca. 20 Km NE of Villa Alta, 17° 25' N, 96º 05' W, 6800-7200 ft., Mickel 934 (UC); Departamento lxtlán, trail from San Pedro Nolasco N to the Llano Verde, 6000-7200 ft., Mickel & Hellwig 3731 (UC); Departamento lxtlán, 58 Km N of lxtlán, 11 Km N of high point at Cerro Pelón, 6600 ft., Mickel & Hellwig 4258 (UC); Departamento lxtlán, 48 Km N of Ixtlán, 61 Km S of Valle Nacional, ca. 1 Km N of high point at Cerro Pelón, 8800 ft., Mickel & Hellwig 4334 (UC); Distrito de Mixel, NW slope of Cerro Zempoaltepetl, trail from Yacoche to Totontepec, 6500-8000 ft., Mickel & leonard 4671 (UC); Departamento de lxtlán, Cerro de Malacate, N of Capulalpan, ca. 8 Km E of Ixtlán, 10 000 to 8600´ NE side of cerro, 8850 ft., Mickel & leonard 5258 (UC); Departamento de lxtlán, 4 Km S of Vista Hermosa, 74 Km N of lxtlán de Juárez on Rte 174, 5400-6200 ft., Mickel & Pardue 6614 (UC); Departamento de Mixel, 3.9 Km al N de Yocochi, carretera, Ayutla-Totontepec, 17° 8' N, 96° 4' W, R. Torres & A. Campos 10703 (MEXU).A
Elevación
1480 – 2700 mA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
The distinctness of many of the species described in the Rojas (1997) publications seems dubious and will require a great deal more study before one has confidence in their definition. Many seem no more than minor variants of already recognized species. Supposed new records are often based on misidentifications or misinterpretations.D
(De los paratipos citados por Rojas en 1997 para Elaphoglossum longistipitatum, Mickel en el 2004 determina como E. leebrowniae al ejemplar de Breedlove 23036 y como E. mcvaughii al ejemplar de Mickel 6614. Por otro lado, el ejemplar de R. Torres C. 10703 un año después el mismo Rojas ahora lo determina como paratipo de E. ellipticifolium, en tanto que Mickel 2004 lo determino como E. leebrowniae)
Elaphoglossum longistipilatum resembles E. latifolium (Sw.) J . Sm. ("sensu stricto") in its blade size, creeping rhizomes, and orange-yellowish rhizome scales, but its rhizomes are thinner (3-6 mm diam. vs. 9-15 mm), rhizome scales are entire (vs. dentate), and the fertile fronds are similar to sterile fronds (vs. the sterile fronds longer and wider). In blade shape and size it resembles E. corifolium Mickel, but differs in its longer (3-10 mm vs. 4-6 mm) and orange (vs. blackish) rhizome scales, small (0.5-1 mm vs. 1-2 mm) and scattered (vs. abundant) blade scales. This species is very similar to E. lingua (C. Pres!) Brack. in size and blade shape, but differs in having thicker rhizomes (3-6 mm vs. 1.5-3 mm), yellowish (vs. blackish) and longer (3-10 mm vs. 1-2 mm) rhizome scales, longer fronds (20-62 cm vs. 12-34 cm), and fertile fronds equal to sterile fronds (vs. sterile fronds shorter than fertile fronds).A