Ecology: Lowlands including Chaco and Chiquitano forest, open montane to páramo and humid puna; on soil, rocks, humus, logs, base and trunk of trees. Elevation: 400-4450 m (Venezuela: 2285-3290 m, Colombia: 930-4260 m, Ecuador: 3080-3690 m, Peru: 1000-4350 m, Bolivia: 400-4450 m). Distribution: Widespread.
Bryum capillare, in its typical form, is characterized by the leaves twisted about the stem when dry, oblong to oblong leaves (ca. 1-4 mm long), recurved and border (by 3-5 linear rows of cells), rather long excurrent costa, rhomboidal upper cells, oblong to short rectangular basal cells. Bryum atenense is similar if not identical to B. capillare (or ‘Capillare group’); see comments under that species.
Specimens: COLOMBIA. Nariño: Ramírez P. 10125 (MO, PSO); Santander: Churchill et al. 18816 (COL, MO, NY). PERU. Amazonas: P. & E. Hegewald 7147 (MO); Junín: P.& E. Hegewald 5334 (MO). BOLIVIA. Cochabamba: Hermann 25253 (MO); Santa Cruz: Churchill et al. 20491 (MO, USZ).