14. Dicranodontium Bruch & Schimp. in B.S.G. 青毛藓属 qing-mao xian shu
Bryol. Eur. 1: 157 (fasc. 41. Monogr. 1). 1847. Dicranum subg. Dicranodontium (Bruch & Schimp.) Kindb., Eur. N. Amer. Bryin. 2: 186. 1897. Dicranum sect. Dicranodontium (Bruch & Schimp.) C. Müll., Gen. Musc. Frond. 277. 1900.
Plants small to large, yellowish brown to dark green, often shiny, in soft tufts. Stems erect, simple, sometimes sparsely branched, more or less radiculose below; central strand present or only weakly developed to absent. Leaves erect-flexuose to secund, lance-subulate, more or less deciduous, gradually or abruptly narrowed from a broad, somewhat auriculate base to a linear, subulate to setaceous acumen; margins often involute, subentire to serrulate below, clearly serrate above; costa broad at base, occupying ca. 1/3–1/2 the leaf base width, filling most of the subula, excurrent, often roughened or serrate at back above, with 2 stereid bands in transverse section; upper cells rectangular to linear, smooth or papillose because of projecting cells’ ends; lower cells broader close to the costa, narrower near the margins, forming a few marginal rows; alar cells usually sharply differentiated, inflated, hyaline to brownish. Dioicous or rarely autoicous. Perichaetial leaves not notably differentiated. Setae single, slender and elongate, erect-sinuose when dry, strongly curved to cygneous when moist; capsules long-exserted, erect, symmetric, oblong-cylindric, smooth when dry; opercula long-rostrate; annuli absent; peristome teeth 16, inserted slightly below the mouth, divided or perforate nearly to the base, vertically striate nearly throughout. Calyptrae cucullate, smooth, entire at base. Spores spherical, yellowish, finely papillose.