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Published In: Bryologia Europaea 1: 157 (fasc. 41. Monogr. 1). 1847. (Bryol. Eur.) Name publication detail

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Dicranodontium and Atractylocarpus are gametophytically identical, and they differ only in the degree of erectness of their moist setae. In Atractylocarpus the setae are erect to flexuous, in Dicranodontium they are cygneous. Williams (1913) synonymized the two on the basis of his observations on setal variability. Dicranodontium has narrowly setaceous leaves with short, ovate bases, broad, excurrent costa with dorsal and ventral stereid cells, linear leaf cells, differentiated alar cells, stems with a central strand and non-sheathing perichaetial leaves. It is separated from some members of Campylopus solely by its linear leaf cells. Pilopogon is also similar in its erect setae, road costa, and habit. It differs from Dicranodontium in having shorter leaf cells, ciliate calyptrae, and sheathing perichaetial leaves.


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Dicranodontium B.S.G., Bryol. Eur. 1: 159. 1847.

Atractylocarpus Mitt., J. Linn. Soc., Bot. 12: 71. 1869.

Plants erect, large to medium; stems radiculose, densely tufted. Leaves crowded, erect to secund, subtubulose, setaceous from a lanceolate base; margins serrulate in upper third, entire below; costa to 2/3 the leaf width at base, long excurrent, in cross section with dorsal and ventral stereid bands; median leaf cells linear, basal cells rectangular; alar cells variously differentiated, frequently fugacious or fragile, not auriculate. Dioicous or autoicious. Setae erect to slightly flexuous or strongly cygneous when moist, erect and twisted when dry; capsules erect or inclined, weakly furrowed; well developed annuli absent; stomata absent; peristome teeth divided, vertically striolate below, papillose above; opercula long rostrate. Calyptrae cucullate, not fringed.


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