Abstract
According to chloroplast rps4 sequence data the genus Syntrichia forms a monophyletic clade clearly separated from Tortula, while Pottia is shown to be polyphyletic and the Rhynchostegiae species (with rostrate lid) are very similar to Tortula. Crossidium is probably polyphyletic. The close affinity of Desmatodon, Stegonia, Pterygoneurum and some of the species of Phascum with Tortula is confirmed by the molecular data.
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