Elaphoglossum mesoamericanum A.Rojas
Descripción
Ab E. latifolium rhizomate compacto, lamina angustiori-elliptica vel oblongo-elliptica, squamis rhizomatis latioribus aurantiacoflavis vel pallido-fuscis integris disimilis.
Rhizomes 8-12 mm diam., compact to short-creeping, commonly horizontal; rhizome scales 5-12 x 1-2 mm, lanceolate, orange-yellowish to pale brown, marginally entire; phyllopodia present, 15-25(-50) mm long; fronds (15-)30-64 cm long, approximate to 2(-5) mm distant; stipes 1/6-1/5 of frond length; stipe scales 3-7 x 1.5-3.0 mm, ovate-lanceolate, orange-yellowish to pale brown, marginally entire to occasionally short-ciliate, present over the entire stipe; blades (12-)24-53 x 2.7-6.1 cm, narrowly elliptic to oblong-elliptic, coriaceous, basally cuneate to attenuate, apically acute; costal scales 1-3 x 0.5-1.5 mm, orange-yellowish to pale brown, marginally erose to long-ciliate; blade scales 0.3-1.0 x 0.2-0.5 mm, deltate to stellate, orange-yellowish to pale brown, dispersed, marginally long-ciliate, present only on abaxial surface; veins evident, simple to 2-forked, ca. 1 mm apart, diverging at 75-85° from costa; hydathodes absent; fertile fronds 22-33 cm long; stipes 1/5-2/5 of frond length; fertile blades 15-27 x 1.9-3.7 cm, narrowly elliptic, basally attenuate to acute, apically acute; intersporangial scales absent.A
Rhizomes 8-12 mm diam., compact to short-creeping, commonly horizontal; rhizome scales 5-12 x 1-2 mm, lanceolate, orange-yellowish to pale brown, marginally entire; phyllopodia present, 15-25(-50) mm long; fronds (15-)30-64 cm long, approximate to 2(-5) mm distant; stipes 1/6-1/5 of frond length; stipe scales 3-7 x 1.5-3.0 mm, ovate-lanceolate, orange-yellowish to pale brown, marginally entire to occasionally short-ciliate, present over the entire stipe; blades (12-)24-53 x 2.7-6.1 cm, narrowly elliptic to oblong-elliptic, coriaceous, basally cuneate to attenuate, apically acute; costal scales 1-3 x 0.5-1.5 mm, orange-yellowish to pale brown, marginally erose to long-ciliate; blade scales 0.3-1.0 x 0.2-0.5 mm, deltate to stellate, orange-yellowish to pale brown, dispersed, marginally long-ciliate, present only on abaxial surface; veins evident, simple to 2-forked, ca. 1 mm apart, diverging at 75-85° from costa; hydathodes absent; fertile fronds 22-33 cm long; stipes 1/5-2/5 of frond length; fertile blades 15-27 x 1.9-3.7 cm, narrowly elliptic, basally attenuate to acute, apically acute; intersporangial scales absent.A
Forma de vida
EpífitaA
Ejemplar revisado
Chiapas: Mpio. Chilón, marsh just S of Bachajón, 900 m, D. Breedlove 22196 (NY); Mpio. Ocozocoautla de Espinoza, 18-20 km N of Ocozocoautla alon road to Mal Paso, 800 m, D. Breedlove & A. Smith 21840 (NY); Mpio. Ocosocuautla de Espinosa, 3 km N of Ocozocoautla along road to Mal Paso, 900 m, D. Breedlove & A. Smith 21972 (CHAPA, MEXU, MO); Valle de Corvotá, M. Bourgeau 2109 (US); Ghiesbreght 274 (GH); Mpio. San Juan Chamula, 6900 ft., C. Santíz 390 (ENCB). Hidalgo: Mpio. Tenago de Doria, Temapa, J. Gimate s. n. (ENCB). Oaxaca: 60 km by road N of Pochutla, on road to Oaxaca (Hwy. 175), Río Jalatengo, 1440 m, W. Anderson 13213 (MEXU); Ixtlán, Comaltepec, S. Comaltepec, 17°33’ N, 96°31’W, L. López & G. Martin 81 (MO); Mpio. Tehuantepec, Dist. Tehuantepec, al S de Santa Lucia, Rancho Limón, 17 km al O de Tehuantepec, C. Martínez 444 (MEXU); Río Cascabel, C. Mell 2238 (US); Villa Alta, 3-4 km S of Villa Alta on trail toward Betaza, 5500 ft., J. Mickel 1128 (ENCB, MEXU, NY, UC); Dist. de Mixes, Vicinity of Zacatepec, along trail SW toward Yacoche for ca. 1 mile, 4700 ft., J. Mickel 1620 (NY, UC); Ixtlán, 29 km S of Valle Nacional, 80 km N of Ixtlán de Juárez, trail E of Rte. 175 at Campamento Vista Hermosa toward Ladú, 1 hour bike down to Río de La Trucha, 1500-2000 ft., J. Mickel 6405 (ENCB); Tuxtepec, 1-3 km S of Usila, 1000 ft., J. Mickel 7386 (NY), J. Mickel 7387 (ENCB, NY); Dist. Mixes, N slope of Cerro Zempoaltepetl, trail from Totontepec to La Candelaria, 2700-7200 ft., J. Mickel & S. Leonard 4751 (NY); Dist. Mixes, E slope of Cerro Zempoaltepetl, 2-3 hrs SW of Zacatepec on trail to Tomazulalpam, 5200-6500 ft., J. Mickel & S. Leonard 4877 (NY, UC); Dist. Pochutla, 181 km S of Oaxaca, 64 km N of Pochutla, 4500 ft., J. Mickel & S. Leonard 5086 (ENCB, IEB); Dist. Pochutla, 45 km N of Pochutla, 13 km N of Candelaria, ca. 3300 ft., J. Mickel & S. Leonard 5226 (MEXU, NY); Tuxtepec, 8 km S of Valle Nacional on Rte. 175, 1850 ft., J. Mickel & L. Pardue 1850 (ENCB); 15 km S of bridge at Valle Nacional, trail from Puerto Eligio E toward Soyalapan, 1500-2400 ft., J. Mickel & L. Pardue 6521 (NY), J. Mickel & L. Pardue 6524 (NY); 8 km S of Valle Nacional on Rte. 175, 1850 ft., J. Mickel & L. Pardue 6678 (ENCB, NY, US); Mpio. San Miguel Chimalapa, paso El Pedregal del Río Portamonedas, ca. 2 km al S de Benito Juárez, ca. 36 km en línea recta al N de San Pedro Tapanatepec, 16°42’ N, 94°08’ W, 900 m, S. Moya 2182 (NY); Mpio. Santa María Chimalapa, Cerro de Los Pavos, al N del Cerro Guayabitos y al O del Río Portamonedas, ca. 47 km en línea recta al N de San Pedro Tapanatepec, 16°47’ N, 94°10’W, S. Moya 3934 (NY); Dist. Putla, a 10 km al NE de Putla, 950 m, L. Rico et al. 569 (MEXU); Mpio. Totontepec, Dist. Mixe, Chinantequila, 17°19’ N, 95°59’W, ca. 1300 m, E. Vargas & G. Martin 118 (MEXU); Choapan, San Pedro de Jepinapa, Santiago de Jocotepec, region of Chinantla, J. Vera 3402 (ENCB, US). Puebla: Mpio. Zacapoaxtla, La Escalera, 1200 m, F. Ventura 22178 (ENCB, IEB); S of Panuatlan, E. Hernández 813 (US). Veracruz: Alto Lucero, Mata Verde, entre Rancho Nuevo y Tierra Blanca, 19°46’ N, 96°41’W, 1200 m, G. Castillo & F. Vázquez 1469 (F); Cantón de Huatusco, 1200 m, C. Conzatti 798 (GH); Ciudad de Córdova, H. Fink 107 (MO); Zacuapan, C. Purpus 1913 (MO).A
Elevación
800 – 2194 mA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Elaphoglossum mesoamericanum resembles E. latifolium in its pale rhizome scales and short-ciliate stipe and blade scales, but differs in having broader (1-2 mm vs. 0.5-1.0 mm), orange-yellowish (vs. orange-reddish to brown) and entire (vs. short-ciliate-dentate) rhizome scales, and relatively narrow (2.7-6.1 cm vs. 4-9 cm) and narrowly elliptic to oblong-elliptic (vs. elliptic to broadly elliptic) blades. It is also similar to E. clewellianum Mickel in size, in having similarly colored and entire rhizome scales, and narrowly elliptic to oblong-elliptic blades, but differs in its shorter (fronds approximate to 2(-5) mm distant vs. 5-20 mm distant) rhizomes, shorter [1/6-1/5 of frond length vs. (1/5-)1/3-1/2] and straw colored (vs. orange-reddish to straw colored) stipes. This species differs of E. chartaceum (Baker ex Jenman) C. Chr. of Caribbean islands in entire (vs. short-ciliate) rhizome scales, relatively longer (1/5-1/3 of frond length vs. 1/6-1/5) stipes, broader (4-6 times as long as wide vs. 6-8 times) blades, broadly cuneate to obtuse (vs. long cuneate to attenuate) blade base, and shorter (0.5-1 mm vs. 1-1.5 mm) veins distance.
The name refers to the distribution area (Mesoamerican) and because is very common here.
A
The name refers to the distribution area (Mesoamerican) and because is very common here.
A