Ecology: Open, possibly forested montane; on soil. Elevation: 900-3000 m (Colombia: 1600-2100 m, Peru: 900 m, Bolivia: 3000 m). Distribution: South America; and according to Ochi (1980) Africa (and Northern Hemisphere).
Bryum pabstianum is supposedly similar to the B. subapiculatum (Ochi 1980), distinguished by elongate, broadly lanceolate leaves, short to somewhat long excurrent costa, margins partically recurved, basal cells enlarged, rectangular, pyriform gemmae present on rhizoids, and synoicous sexual condition.
Specimens: COLOMBIA. Valle: Killip 11585 (MO). BOLIVIA. Santa Cruz: Herzog 4430 (type: B. subnanophyllum).