Musc. Buitenzorg 4: 1136. 1923.
Plants large, in loose mats, yellowish to golden green. Stems reclining to suberect, julaceous, regularly to irregularly pinnate, branches loosely terete-foliate; central strand present; pseudoparaphyllia orbicular-triangular; axillary hairs of 4–9 cells. Stem leaves erect or appressed, crowded and imbricate to loosely arranged, broadly ovate to oblong, strongly concave, weakly plicate when dry; base scarcely decurrent; margins entire to weakly toothed; apex gradually tapered, rounded-obtuse, apiculate; costa to 30–70% leaf length, slender, terminal spine absent; alar cell walls thick; laminal cells linear-flexuose, 10:1. Branch leaves similar. Sexual condition dioicous; [inner perichaetial leaves erect, apex subulate-acuminate. Seta brown when mature, smooth. Capsule inclined to pendulous, reddish brown, oblong-cylindric, curved; annulus well defined, of 2 rows of cells; operculum bluntly conic. Calyptra naked. Spores 11–13 µm].
Introduced; Europe, introduced nearly worldwide, primarily in temperate areas.
Miller, N. G. 2000. First records of a European moss, Pseudoscleropodium purum, naturalized in New England. Rhodora 102: 514–517.