Plants small to large, in thin to thick mats, green, yellow-green, orange-green, or gold-green, brown with age. Stems irregularly branched; paraphyllia many, few on older stems, or sometimes absent, filamentous to foliose, cells smooth or prorulose; rhizoids in clusters arising from base of stem leaves. Stem and branch leaves similar. Stem leaves appressed to julaceous when dry, erect-spreading when moist, ovate to lanceolate, weakly to strongly plicate on either side of costa; margins recurved proximally, entire to serrulate distally, ; apex abruptly acute to long-acuminate, hair-point present or absent; costa single, , 2/3 leaf length to subpercurrent, , not or weakly sinuate; alar cells transversely elongate, quadrate, or short-rectangular; proximal laminal cells similar to medial cells, usually shorter, 1-4:1, walls pitted; medial cells quadrate to elongate-rhomboidal, <1-4:1>, 1-papillose to prorate, walls firm to thin; . Specialized asexual reproduction absent. Sexual condition dioicous; perichaetial leaves pale translucent, erect when moist, longer, apex more acuminate, costa percurrent. Seta 0.8-1.2 cm. Capsule inclined, cylindric, asymmetric or symmetric; annulus absent; operculum smooth conic (conic-apiculate in P. baileyi); peristome well developed; exostome teeth lanceolate, striate to papillose; endostome basal membrane high, segments slender-lanceolate to filiform, cilia well developed to short and rudimentary. Spores 10-28 µm, papillose.
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