Ecology. Humid puna; on rocks in stream. Elevation. 3570-4700 m. Distribution. Bolivia: World range: Colombia to Bolivia.
Ditrichum submersum is characterized by the aquatic habit, plant stature to 10 cm, short oblong-setaceous leaves to 7 mm, and obscure upper, oblong cells of the lamina. The identity of this species is not well characterized, collections thus named from Colombia and Ecuador vary considerably from that illustrated by Herzog. Reports of this species may represent Ditrichum bogotense (Hampe) Broth. The type, collected by Herzog, is from Iscayuni glacier near Monteblanco (Department of La Paz).
Specimens. La Paz: Lewis 87-443 (LPB, MO, USZ).