Ecology: Lower open montane to páramo and puna; on rocks, commonly associated with streams. Elevation: 1150-4600 m (Venezuela: 2580-3470 m, Colombia: 1150-3600 m, Ecuador: 3450 m, Peru: 2200-2400 m, Bolivia: 2250-4600 m). Distribution: Tropical Andes.
Ecología: Montano abierto inferior hasta páramo y puna; sobre rocas, asociada comúnmente con corrientes. Elevación: 1150-4600 m (Venezuela: 2580-3470 m, Colombia: 1150-3600 m, Ecuador: 3450 m, Perú: 2200-2400 m, Bolivia: 2250-4600 m). Distribución: Andes Tropicales.
Racomitrium cucullatifolium is distinguished by the erect or slightly curved (but not falcate) leaves with obtuse apices. Admittedly many collections have entire, obtuse apices, but not uncommon are some mixed collections with an obtuse and short hyaline apices (=Racomitrium dimorphum (Müll. Hal. ex E. Britton) Paris). Collections examined from Colombia certainly appear as a distinct taxon, and a bit difficult to consider these specimens as the same as R. crispipilum.