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1 . Campylopus Brid. Musc. Rec. Suppl. 4 (Mant. Musc.): 71. 1819.
Variously coloured plants, usually growing in mats or cushions. Stems often tomentose, simple or sparingly branched, equally or interruptedly. Stems foliate. Leaves lanceolate or filiform. Costa broad and strong, often excurrent, showing in cross-section 2, one or no bands of stereids. Alar cells usually very conspicuous, brown. Cells quadrate, rhomboid or elongate, basal cells sometimes with thickened, pitted walls. Capsules often more than one from a perichaetium, seta often arcuate, cygneous when moist. Peristome teeth forked, finely vertically striate in lower part. Calyptra sometimes fringed at base.
Type species: C. flexuosus ( Hedw. ) Brid. ( Dicranum flexuosum Hedw. ; lectotype according to Britton, Fl Bermuda 433. 1918)