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!Hyophila involuta (Hook.) A. Jaeger Search in The Plant ListSearch in NYBG Virtual HerbariumSearch in Muséum national d'Histoire naturelleSearch in Type Specimen Register of the U.S. National HerbariumSearch in Virtual Herbaria AustriaSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical Garden Decrease font Increase font Restore font
 

Published In: Bericht über die Thätigkeit der St. Gallischen Naturwissenschaftlichen Gesellschaft 1871–72: 354 (Gen. Sp. Musc. 1: 202). 1873. (Ber. Thätigk. St. Gallischen Naturwiss. Ges.) Name publication detail
 

Project Name Data (Last Modified On 1/29/2013)
Acceptance : Accepted
Project Data     (Last Modified On 6/26/2014)
country distribution: Venezuela, Colombia, Ecuador, Peru, Bolivia
EcoRegions: Montane Forest, Wet coastal pacific (Chocó), Amazon (incl. Llanos)
elevation: 0-500, 500-1000, 1000-1500, 1500-2000, 2000-2500, 2500-3000
substrate: soil, rocks

Notes     (Last Modified On 6/26/2014)
Notes:
Ecology: Lowland to montane forest; shaded to more often exposed sites, frequent along streams, on soil and soil covered rocks. Elevation: 10-2700 m (Venezuela: 40-2155 m, Colombia: 10-2440 m, Ecuador: 310-2700 m, Peru: 350-2150 m, Bolivia: 170-2200 m). Distribution: Nearly pantropical, extending into the Northern Hemisphere.
 
Hyophila involuta is distinguished by the spathulate to oblong-elliptical leaves to 2.5 mm, rounded-obtuse apex, plane to broadly incurved, entire or weakly dentate margins, distal lamina cells bulging on ventral side and smooth on dorsal side (papillae absent), rather large and thin-walled, rectangular cells differentiated at basal juxtacostal region, propagula occasionally present. A distinctive field character, combined with habitat, is the tubulose and incurved form of the leaves when dry.
 
Hyophila involuta se distingue por las hojas espatuladas a oblongo-elípticas hasta 2.5 mm, ápice redondeado-obtusos, planos a anchamente incurvados, márgenes enteros o débilmente dentados, células distales de la lámina abultadas en el lado ventral y lisas en el lado dorsal (papilas ausentes), células diferenciadas en la región basal yuxtacostal, rectangulares, bastante grande y con paredes delgadas, propágulos ocasionalmente presentes. Una característica distintiva en campo, además del hábitat, es la forma de las hojas tubulosas e incurvadas en seco.

 

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Plants small to medium sized, forming loose to dense tufts, dull green, often blackish or blackish-brown below. Stems erect, 0.5-1.5 cm tall, few to several branched; in cross-section outer 1-2 rows of cells rather small, thick-walled, inner cells large, thin-walled, central strand present. Leaves oblong-obovate to ± spathulate, 1.5-2.5 mm long, to 0.8 mm wide, apex acute to obtuse, often apiculate or mucronate; margins entire below, distally irregularly serrate to dentate or subentire; costae single, rather strong, percurrent, in cross-section stereids above and below guide cells; lamina unistratose, median cells quadrate-rounded to oval, 4-6 µm in diameter, thick-walled, mammillose, bulging on upper surface; basal cells rectangular, 20-30 µm long, 10-14 µm wide, rather thin-walled and lax. Propagula occasionally present in distal leaf axils, produced terminally on cylindrical stalked cells; propagula simple or branched, to ca. 160 µm long, smooth. Dioicous. Perichaetia terminal; leaves similar to stem leaves. Setae elongate, to 7 mm long, slender, smooth. Capsules erect, urn cylindrical, 1.2-1.6 mm long; opercula conic-rostrate; peristome absent. Calyptrae cucullate, smooth and naked. Spores spherical, smooth to lightly papillose.
 
Plantas pequeñas hasta medianas, formando manojos laxos hasta densos, verde opacas, a menudo negruzcas o pardo-negruzcas en la porción inferior. Tallos erectos, 0.5-1.5 cm de alto, poco a muy ramificados; en corte transversal 1-2 filas externas de células bastante pequeñas, con paredes gruesas, células internas grandes, con paredes delgadas, cordón central presente. Hojas oblongo-obovadas hasta ± espatuladas, 1.5-2.5 mm de largo, hasta 0.8 mm de ancho, ápices agudos hasta obtusos, a menudo apiculados o mucronados; márgenes enteros abajo, irregularmente serrados a dentados o subenteros en la porción distal; costa simple, bastante fuerte, percurrente, en corte transversal estereidas encima y debajo de las células guía; lámina uniestratificada, células mediales cuadrado-redondeadas hasta ovales, 4-6 µm de diámetro, con paredes gruesas, mamilosas, abultadas sobre la superficie superior; células basales rectangulares, 20-30 µm de largo, 10-14 µm de ancho, con paredes bastante delgadas y laxas. Propágulos ocasionalmente presentes en las axilas de las hojas distales, producidas en células cilíndricas del tallo?{stalked}; propágulos simples o ramificados, ca. hasta160 µm de largo, lisos. Dioicas. Periquecios terminales; hojas similares a las hojas del tallo. Setas alargadas, hasta 7 mm de largo, delgadas y lisas. Cápsulas erectas, urna cilíndrica, 1.2-1.6 mm de largo; opérculo cónico-rostrado; peristoma ausente. Caliptra cuculada, liso y desnuda. Esporas esféricas, lisas hasta finamente papilosas.
 
 


 

 
 
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