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Published In: Phytologia 41: 21. 1978. (Phytologia) Name publication detailView in Biodiversity Heritage Library

Project Name Data (Last Modified On 6/21/2009)
Acceptance : Accepted
Project Data     (Last Modified On 10/30/2017)
Plant Category: Moss
EcoRegions: Puna, Dry inter-Andean valleys
Elevation: 2000-2500, 2500-3000, 3000-3500, 3500-4000, 4000-4500, 4500-5000
Substrate: soil, rocks
Frequency: common

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

Ecology. Dry inter-Andean valleys and puna; occasionally along streams, on soil and rocks. Elevation. 2250-4905 m. Distribution. Bolivia: Chuquisaca, Cochabamba, La Paz, Oruro, Potosí, Santa Cruz, Tarija. World range: North, Central and South America, Europe, South Africa and Australasia.
Ecología. Valles secos interandinos y puna; ocasionalmente a lo largo de quebradas, sobre suelo y rocas. Altitud. 2250-4905 m. Distribución. Bolivia: Chuquisaca, Cochabamba, La Paz, Oruro, Potosí, Santa Cruz y Tarija. Distribución mundial: Norte, Centro y Sur América, Europa, Sur África y Australasia.
Didymodon australasiae is characterized by the absence of a stem hyalodermis (rarely present in patches), generally lanceolate to oblong-lanceolate leaves to 2.5 mm, bistratose marginal cells, quadrate upper adaxial costal (epidermal) cells, pluripapillose upper lamina cells (papillae simple to bifurcate), quadrate to short rectangular basal cells, and undifferentiated marginal basal cells (similar to basal cells), ± isodiametric. Didymodon subtophaceus R.S. Williams (La Paz: 12000 ft, 18 Aug 1901, Williams 2869, lectotype NY) is a synonym. Both D. australasiae and D. umbrosa (the latter as a variety of the former in some treatments) have been treated as Trichostomopsis. These two taxa can be separated by the following key (Jiménez et al., 2005):
1. Stem hyalodermis absent or occasionally present in patches; leaves oblong-lanceolate to lanceolate, ovate or triangular; basal cells at margin not or weakly differentiated, quadrate to short rectangular … Didymodon australasiae
1. Stem hyalodermis present; leaves long-lanceolate; basal cells at margin distinctly differentiated, long rectangular … Didymodon umbrosa
Didymodon australasiae se caracteriza por la ausencia de hialodermis en el tallo (rara vez presente en parches), hojas generalmente lanceoladas a oblongo-lanceoladas hasta 2.5 mm, células marginales biestratificadas, células adaxiales superiores de la costa cuadradas (epidérmicas), células superiores de la lámina pluripapilosas (papilas simples a bifurcadas), células basales cuadradas a corto rectangulares, y células basal marginales indiferenciadas (similares a las células basales), ± isodiamétricas. Didymodon subtophaceus R.S. Williams (La Paz: 12000 ft, 18 Aug 1901, Williams 2869, lectotipo NY) es un sinónimo. Tanto D. australasiae como D. umbrosa (la última es una variedad de la primera según algunos tratamientos) han sido consideradas como Trichostomopsis. Ambos taxa pueden ser separados mediante la siguiente clave (Jiménez et al., 2005):
1. Tallos sin hialodermis u ocasionalmente presente en parches; hojas oblongo-lanceoladas a lanceoladas, ovadas o triangulares; células basales en el margen no o débilmente diferenciadas, cuadradas a corto rectangulares … Didymodon australasiae
1. Tallos con hialodermis; hojas largo-lanceoladas; células basales en el margen conspicuamente diferenciadas, largo rectangulares … Didymodon umbrosa



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