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Published In: Elenco dei Muschi 31. 1837. (Elenc. Musch.) Name publication detail
 

Project Name Data (Last Modified On 6/21/2009)
Acceptance : Accepted
Project Data     (Last Modified On 10/30/2017)
Plant Category: Moss
EcoRegions: Puna, Open Yungas montane
Elevation: 2000-2500, 2500-3000, 3000-3500
Substrate: soil, rocks
Frequency: rare

Notes     (Last Modified On 10/30/2017)
general taxon notes:

Ecology. Open Yungas montane, possibly extending into the shrubby humid puna; exposed habitats, on wet soil and rocks. Elevation. 2250-3450 m. Distribution. Bolivia: La Paz. World range: widespread, particularly in the Northern Hemisphere.
 
Ecología. Montano abierto de Yungas, posiblemente extendiéndose en la puna húmeda arbustiva; hábitats expuestos, sobre suelo y rocas húmedas. Altitud. 2250-3450 m. Distribución. Bolivia: La Paz. Distribución mundial: amplia distribución, especialmente en el hemisferio norte.
 
Didymodon tophaceus is characterized by the oblong-lanceolate to ligulate leaves to 2 mm, obtuse to round apices, broadly decurrent bases, recurved margins (lower ca. 3/4 leaf length), subpercurretn costa, elongate, distal ventral cells of the costa, in cross-section ventral stereid band absent or weakly developed, dorsal stereid band usually distinct, upper lamina cells ± isodiametric with 1-2 low papillae or absent, and firm-walled, rectangular basal cells. This species is usually associated with calcareous rocks, often encrusted with lime. Gyroweisia boliviana R.S. Williams, based on three syntype collections made by Williams in 1901 and 1902, is a synonym.
 
Didymodon tophaceus se caracteriza por las hojas oblongo-lanceoladas a liguladas hasta 2 mm, ápice obtuso a redondeado, bases anchamente decurrentes, márgenes recurvados (ca. 3/4 inferiores de la hoja), costa subpercurrete, células ventral distales de la costa alargadas, en corte transversal sin franja ventral de estereidas o débilmente desarrolladas, franja dorsal de estereidas generalmente conspicua, células superiores de la lámina ± isodiamétricas con 1-2 papilas bajas o ausentes, y paredes firmes, células basales rectangulares. Esta especie generalmente está asociada con rocas calcáreas, a menudo incrustada en cal. Gyroweisia boliviana R.S. Williams, basada en tres sintipos colectados por Williams en 1901 y 1902, es un sinónimo.
 
Specimens. La Paz: Williams 1785, 1786, 2868.

 


 

 
 
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