Rhodobryum umbraculum (bruch ex Hook.) Schimp. ex Paris

Plants large to robust, solitary or gregarious, green or dark green above, reddish brown below; terricolous or humicolous. Stems erect from rhizomes, to 40 mm tall, simple or occasionally branching by subperichaetial innovations, red-brown, tomentose; rhizoids reddish brown, papillose. Leaves distant and reduced below, rosulate above, undulate, erect dry, widely spreading to squarrose wet; broadly obovate-spathulate, 7-15 mm long; apex generally obtuse, occasionally apiculate; margins plane above, recurved below, denticulate above; border (2-)3-4 cells wide, occasionally reddish. Costa ending below apex to apiculate, frequently reddish; in section subround to semicrescent shaped, ventrally slightly concave, laminal insertion ventral, ventral cells in 5-6 rows, dorsal substereid band weakly differentiated, dorsal cells incrassate, reddish, hydroids present between substereids and ventral cells. Upper laminal cells rhomboidal, (85-)100-150(-180) µm long, (35-)45-55 µm wide, pitted, gradually narrowed towards border; basal cells rectangular, pitted. Filamentous gemmae absent. Dioicous, polysetaceous. Perichaetia terminal; leaves oblong-acuminate or triangular, reddish below; margins entire to denticulate; border weak or absent; costa ending below apex. Seta 27-32 mm long, reddish brown; capsule horizontal to pendulous, brown or reddish brown, straight or slightly curved, oblong-cylindncal, contracted below mouth dry, urn 3.0-3.5 mm long, neck 1.0-1.8 mm long, wrinkled dry; exothecial cells irregular in shape, incrassate, smaller at mouth, 1-2 rows at mouth in transverse rows; peristome teeth narrowly oblong-acuminate or lanceolate, yellowish brown, hyaline above, trabeculate, finely papillose, endostome segments keeled, broad below, tapered above, broadly perforated, cilia 3, appendiculate, basal membrane high, yellowish, minute papillose; operculum conic; spores round, 15-17 µm, essentially smooth.