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Published In: Bryologia Europaea 4: 69 (Fasc. 23–24. Monogr. 3). 1844. (Bryol. Eur.) Name publication detail

Project Name Data (Last Modified On 10/19/2009)
Acceptance : Accepted
Project Data     (Last Modified On 9/13/2013)
country distribution: Venezuela, Colombia, Ecuador, Peru, Bolivia
EcoRegions: Páramo, Puna, Montane Forest
elevation: 500-1000, 1000-1500, 1500-2000, 2000-2500, 2500-3000, 3000-3500, 3500-4000
substrate: soil, logs, treelets and trees
frequency: common

Notes     (Last Modified On 9/13/2013)

Ecology: Montane open or forest montane to subpáramo and shrubby humid puna; epiphytic or on soil (sand and clay). Elevation: 900-3770 m (Venezuela: 1880 m, Colombia: 2395-3400 m, Ecuador: 1420-1600 m, Peru: 1900-2250 m, Bolivia: 900-3770 m). Distribution: United States, widespread in the Neotropics, also Europe, Asia.
Ecología: Bosques abiertos o marginales en montano medio a alto y subpáramo; epífitas o sobre suelo (arenoso y arcilloso). Elevación: 900-3770 m (Venezuela: 1880 m, Colombia: 2395-3400 m, Ecuador: 1420-1600 m, Perú: 1900-2250 m, Bolivia: 900-3770 m). Distribución: Estados Unidos, ampliamente distribuidas en el Neotrópico.
Orthodontium pellucens is distinguished by the oblong-linear leaves to ca. 3 mm, bluntly acuminate or acute apex, autoicous sexual condition, ovoid-cylindrical capsules to 1.5 mm, irregularly furrowed urn when dry, endostome often slightly shorter than exostome. Orthodontium gracile Schwägr. has been attributed to Colombia on the basis of O. osculatianum De Not., a synonym of the former, however the type is from Ecuador, not Colombia. Orthodontium confine Hampe is a synonym.
Orthodontium pellucens se distingue por las hojas oblongo-lineares hasta ca. 3 mm, ápices obtusamente acuminados o agudos, condición sexual autoica, cápsulas ovoide-cilíndricas hasta 1.5 mm, urna irregularmente acanalada en seco, endostoma a menudo escasamente más corto que el exostoma.


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Plants rather small, to 1 cm tall, forming lax and soft tufts, glossy green or golden-yellow or -brown. Stems short, erect, rusty-red; in cross-section central strand absent or weak; radiculose, occasionally densely tomentose. Leaves mostly erect-spreading to spreading and flexuose, narrowly lanceolate to linear-lanceolate, 2.5-3.2 mm or more long, usually folded, apex broadly acute to narrowly acuminate, concave toward base; margins plane, entire, often sparsely serrate at apex; costae single, ending below apex; laminal cells smooth, upper and median cells linear-oblong, 70-120 µm long, 4-6 µm wide, ± vermicular, ± thick-walled; basal cells oblong-rectangular, thin-walled and ± lax, usually rusty-red. Autoicous. Perigonia usually numerous, bud-like, 0.4 mm tall, short stalked. Perichaetia terminal; leaves little differentiated. Setae elongate, erect or slightly flexuose, to ca. 10 mm long. Capsules erect to inclined, urn ovoid-cylindrical, 1.0-1.5 mm long, slightly constricted below mouth, neck short; opercula long rostrate, 0.5-0.6 mm long, oblique; peristome double, rather reduced, exostome smooth to faintly papillose, ca. 190 µm long, segments narrow, perforate, 260 µm long (usually longer than exostome). Calyptrae cucullate, 1.1-1.3 mm long, ± smooth and naked. Spores rather coarsely papillose, 18-22 µm in diameter.
Plantas algo pequeñas, hasta 1 cm de alto, formando céspedes laxos y suaves, verde brillantes o dorado-amarillas o -pardas. Tallos cortos, erectos, rojo-óxido; en sección transversal cordón central ausente o débil; radiculoso, ocasionalmente densamente tomentoso. Hojas mayormente erecto-extendidas a extendidas y flexuosas, angostamente lanceoladas a linear-lanceoladas, 2.5-3.2 mm o más largas, usualmente plegadas, ápice anchamente agudo a angostamente acuminado, cóncavas hacia la base; márgenes planos, enteros, con frecuencia escasamente aserrados en el ápice; costa simple, terminando debajo del ápice; células de la lámina lisas, células superiores y mediales linear-oblongas, 70-120 µm de largo, 4-6 µm de ancho, ± vermiculares, paredes ± gruesas; células basales oblongo-rectangulares, de paredes delgadas y ± laxas, usualmente rojo-óxido. Autoicas. Perigonios usualmente numerosos, en forma de brote, 0.4 mm de alto, corto pedicelados. Periquecios terminales; hojas poco diferenciadas. Setas alargadas, erectas o ligeramente flexuosa, hasta aprox. 10 mm de largo. Cápsulas erectas a inclinadas, urna ovoide-cilíndrica, 1.0-1.5 mm de largo, ligeramente constricta debajo de la boca, cuello corto; opérculo largo rostrado, 0.5-0.6 mm de largo, oblicuo; peristoma doble, algo reducido, exostoma liso a apenas papiloso, aprox. 190 µm de largo, segmentos del endostoma angostos, perforados, 260 µm de largo (usualmente más largos que el exostoma). Caliptra cuculada, 1.1-1.3 mm de largo, ± lisa y desnuda. Esporas algo ásperamente papilosas, 18-22 µm de diámetro.


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