Home Bolivia Bryophyte Project
Name Search
Families
Generic List
Moss Checklist
About
Herzog Biography
Ecoregions
Collectors
Literature for Bolivia
Catalogo de las Briofitas
Key to the Families of Mosses
Glossary
Microdus Schimp. ex Besch. Search in The Plant ListSearch in Index Nominum Genericorum (ING)Search in NYBG Virtual HerbariumSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical Garden Decrease font Increase font Restore font
 

Published In: Mémoires de la Société des Sciences Naturelles de Cherbourg 16: 161. 1872. (Mém. Soc. Sci. Nat. Math. Cherbourg) Name publication detail
 

Project Name Data (Last Modified On 11/18/2009)
Acceptance : provisional
Notes     (Last Modified On 10/28/2012)
general taxon notes:

Microdus is a pantropical genus of far fewer than the some 40 species recognized; about 10 or fewer species in the Neotropics. Lowland to mid open montane sites in the tropical Andes; on soil, apparently not uncommon in sites associated with human disturbance, pastures, road banks, etc. Species of this genus are poorly known in the Andes, partly due to their inconspicuous small size; it could be stated that the “Status Uknown” applies to nearly all listed species. This genus is essentially a small Dicranella with mostly erect leaves and a short peristome. According to Ochyra (1997) Leptotrichella has priority over Microdus. Several authors include Microdus in Dicranella; future treatment for Bolivia will include Microdus in Dicranella.

 

Microdus es un género pantropical con menos de 40 especies reconocidas; ca. 10 o menos especies en el Neotrópico. Tierras bajas hasta sitios abiertos del bosque montano en los Andes tropicales; sobre suelo, aparentemente frecuente en sitios asociados con disturbios humanos, pasturas, taludes de caminos, etc. Las especies de este género son poco conocidas en los Andes, en parte debido a su tamaño reducido; casi todas las especies pueden ser categorizadas como "estado desconocido". Este género es parecido a una Dicranella pequeña generalmente con hojas erectas y peristoma corto. De acuerdo a Ochyra (1997) Leptotrichella tiene prioridad sobre Microdus. Varios autores incluyen a Microdus en Dicranella; el futuro tratamiento  de los musgos de Bolivia incluirá a Microdus en Dicranella.

 

Status Unknow:

 

Microdus kunzeanus (Müll. Hal.) Broth., Nat. Pflanzenfam. (ed. 2) 10: 181. 1924. Leptotrichum kunzeanum Müll. Hal., Bot. Zeitung (Berlin) 5: 806. 1847. Dicranella kunzeana (Müll. Hal.) Mitt., J. Linn. Soc., Bot. 12: 34. 1869. Reported for Peru and Bolivia.

Microdus nanocarpus (Müll. Hal. ex E. Britton) Paris, Index Bryol. (ed. 2) 3: 239. 1905. Dicranella nanocarpa Müll. Hal. ex E. Britton, Bull. Torrey Bot. Club 23: 475. 1896. Aongstroemia nanocarpa (Müll. Hal. ex E. Britton) Müll. Hal., Nuovo Giorn. Bot. Ital. n. s. 4: 38. 1897. Type: Bolivia. Near Yungas, 4000 ft. Rusby 3139 p.p. Only known from the Bolivian type locality at 2100 m elevation.


Reference List     (Last Modified On 10/28/2012)
Reference:

 

Export To PDF Export To Word

Plants small, solitary or forming short tufts. Stems erect, simple or few branched; central strand present. Leaves erect to appressed, ovate- to triangular-lanceolate or -subulate, or narrowly to ± broadly oblong-ligulate, apex acute to obtuse-rounded; margins partially inflexed to reflexed, entire to distally dentate or serrate; costae single, rather strong, ending below apex; median cells rectangular to subquadrate, smooth; lower and basal cells larger, rectangular; alar region undifferentiated. Autoicous. Perichaetia terminal; leaves similar or larger and elongate. Setae elongate, smooth, twisted or not. Capsules erect or suberect to horizontal, urn short ovoid-cylindrical to globose; exothecial cells thick-walled; annuli present; peristome single, teeth 16, entire or divided irregular to near base, usually less than 200 µm, blunt, vertically striate-papillose. Calyptrae cucullate, smooth and naked. Spores finely to coarsely papillose.

 

Plantas pequeñas, solitarias o formando manojos cortos. Tallos erectos, simples o poco ramificados; con cordón central. Hojas erectas hasta adpresas, ovado- a triangular-lanceoladas o -subuladas, o angostamente hasta ± anchamente oblongo-liguladas, ápices agudos hasta obtuso-redondeados; márgenes parcialmente inflexos hasta reflexos, enteros hasta distalmente dentados o serrados; costa simple, bastante fuerte, terminando debajo del ápice; células de la porción media rectangulares hasta subcuadradas, lisas; células inferiores y basales mayores, rectangulares; región alar indiferenciada. Autoicas. Periquecios terminales; hojas similares o mayores y alargadas. Setas alargadas, lisas, torcidas o no. Cápsulas erectas o suberectas hasta horizontales, urna corta ovoide-cilíndrica hasta globosa; células exoteciales con paredes gruesas; con anillo; peristoma simple, con 16 dientes, enteros o partidos de manera irregular cerca de la base, generalmente menores de 200 µm, obtusos, verticalmente estriado-papilosos. Caliptra cuculada, lisa y desnuda. Esporas finamente a gruesamente papilosas.

 
 
© 2014 Missouri Botanical Garden - 4344 Shaw Boulevard - Saint Louis, Missouri 63110