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

Project Name Data (Last Modified On 9/23/2017)
Acceptance : Accepted
Note : Alternative name: Geheebia tophacea (Brid.) R.H. Zander
Project Data     (Last Modified On 10/6/2017)
Plant Category: Mosses
country distribution: Colombia, Ecuador, Peru, Bolivia
EcoRegions: Páramo, Puna, Open montane
elevation: 2000-2500, 2500-3000, 3000-3500
substrate: soil, rocks
frequency: infrequent

Notes     (Last Modified On 10/6/2017)
Ecology: Open montane; on wet rocks. Elevation: 2250-3200 m (Colombia: 3100-3200 m, Ecuador: ? m, Peru: 2500-2700 m, Bolivia: 2250-2550 m). Distribution:
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.



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