in H. G. L. Reichenbach, Consp. Regn. Veg.,32. 1828 ,
Etymology: Greek erpo, creeping, alluding to growth habit
Basionyms: Anoectangium Erpodium
Found in FNA Volume 27. Treatment on page 471. Mentioned on page 470, 472.
Plants dull or shiny, light to dark green. Leaves ± monomorphic, spirally arranged, appressed or spreading and complanate when dry, spreading and often complanate when wet, bilaterally symmetric to asymmetric, ovate, elliptic, or lanceolate, rounded to obtuse, or acute, acuminate to subulate; laminal cells smooth or pluripapillose, distal cells rhombic to hexagonal, proximal cells oblate-oblong in several marginal rows. Perichaetial leaves enlarged or not, sheathing. Seta short, usually straight. Capsule immersed to shortly exserted, stomata few; annulus none to broad and persistent; peristome absent (or present); operculum usually rostrate. Calyptra mitrate, lobed at base, ± plicate.
North America, Mexico, West Indies, Central America, South America, Africa, Australia.
Species 17–24 (2 in the flora).