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Mniaceae Schwägr. Search in NYBG Virtual Herbarium Decrease font Increase font Restore font
 

Published In: Species Muscorum Frondosorum 25. 1830. (Sp. Musc. Frond.) Name publication detail
 

Project Name Data (Last Modified On 9/21/2009)
Acceptance : Accepted
Project Data     (Last Modified On 5/18/2013)
General Reference:
Tropicos Lookup Reference:

Notes     (Last Modified On 5/18/2013)
Notes:

The Mniaceae contain nine genera and about 70 species; two genera and four species in the Neotropics.

 

Mniaceae contiene nueve géneros y ca. 70 especies; dos géneros y cuatro especies en el Neotrópico.


 

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Plants somewhat small to medium sized, forming tufts or loose mats. Stems commonly erect, occasionally procumbent; few branched by innovations; in cross-section central strand well developed; radiculose to tomentose below. Leaves spirally arranged when erect, when procumbent appearing 2-ranked, crispate when dry, obovate to oblong or elliptical, apex acute to obtuse-rounded and mucronate or cuspidate, base narrowly decurrent; lamina unistratose; margins limbate, distal 2/3 serrate to dentate, teeth single or paired; costa single, subpercurrent to percurrent; laminal cells smooth, upper and median cells hexagonal-rounded to subquadrate, collenchymatous; basal cells rectangular-rounded or oblong; marginal cells linear, forming a border of 2 to several rows. Synoicous or autoicous. Perichaetia terminal. Setae elongate, smooth. Capsules exserted, pendent, obloid to obloid-cylindrical, neck short; opercula conic-long rostrate, oblique; peristome double, exostome teeth 16, finely papillose; endostome basal membrane high, segments 16, finely papillose, cilia 3(2-4), nodose. Calyptrae cucullate, smooth and naked. Spores spherical, finely papillose.
 
Plantas algo pequeñas a medianas, formando manojos o tapices laxos. Tallos comúnmente erectos, ocasionalmente procumbentes; pocos ramificados por innovaciones; en sección transversal con cordón central bien desarrollado; radiculosos a tomentosos abajo. Hojas ordenadas espiraladamente si las plantas son erectas, si son procumbentes aparentemente en dos hileras, crispadas en seco, obovadas a oblongas o elípticas, ápice agudo a obtuso-redondeado y mucronado o cuspidado, base angostamente decurrente; lámina uniestratificada; márgenes limbados, aserrados o dentados en los 2/3 distales, dientes simples o en pares; costa simple, subpercurrente a percurrente; células de la lámina lisas, células superiores y mediales hexagonal-redondeadas a subcuadradas, colenquimatosas; células basales rectangular-redondeadas u oblongas; células marginales lineales, formando un borde de 2 a varias hileras. Sinoicas o autoicas. Periquecios terminales. Setas elongadas, lisas. Cápsulas exsertas, péndulas, obladas a oblado-cilíndricas, cuello corto; opérculo largo-cónico rostrado, oblicuo; peristoma doble, dientes del exostoma 16, finamente papilosos; membrana basal del endostoma alta, segmentos 16, finamente papilosos, cilios 3(2-4), nudosos. Caliptra cuculada, lisa y desnuda. Esporas esféricas, finamente papilosas.
 

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1. Leaf margin doubly toothed (teeth in pairs); plants autoicous … Mnium
1. Leaf margin singly toothed; plants synoicous … Plagiomnium
 
1. Margen foliar con dientes dobles … Mnium
1. Margen foliar con dientes simples … Plagiomnium

 

 
 
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