Ecology and distribution. Open montane to páramo; on soil and rocks. Frequent, at elevations from 1400-4370 m (Venezuela: 2600-3200 m, Colombia: 1400-3500 m, Ecuador: 1850-4300 m, Peru: 2600-4370 m, Bolivia: 3200-4200 m). High elevations from Mexico to at least Bolivia.
Bryoerythrophyllum jamesonii is distinguished by the ovate-oblong leaves to 3.5 mm, broadly acute apex, usually strongly toothed distally along margin, gradually differentiated, thick-walled, rectangular inner basal leaf cells (not inflated). Bryoerythrophyllum campylocarpum is similar to B. jamesonii, but the inner basal cells are inflated and thin-walled; see additional comments given for B. campylocarpum. Synonyms include Leptodontium albovaginatum Herzog, L. subplanifolium Thér. and Tortula armata Broth.