Plants small to medium-sized, pale green. Stems 4-10 cm, yellowish green to pale brown, creeping, ascending, or erect, , densely to sparsely pinnate, branches0.4-0.7+ cm; hyalodermis absent, central strand weak; pseudoparaphyllia filamentous to lanceolate, occasionally 2-fid. Leaves , straight to falcate-secund, ovate or oblong-lanceolate, gradually narrowed to apex, 1.7-2.2(-2.5) × 0.6-0.8(-0.9) mm; base not decurrent, not auriculate; margins plane or recurved basally, usually markedly serrulate distally; acumen short; costa double and short or indistinct; alar region not well defined; proximal cells somewhat enlarged and somewhat decurrent at extreme marginal cell; basal laminal cells shorter, broader than medial cells, light yellow or unpigmented, walls often porose; medial cells (60-)70-90(-100) × 3 µm. Sexual condition dioicous; . Sporophytes unknown in North America.