Abstract
The morphology of leaves, stems and axillary hairs is compared and described in O. sinusosus and O. tenuirostris. O. sinuosus may fall within the range of variation of Barbula as currently understood in Britain, but O. tenuirostris is closer to Trichostomum. The morphology of the axillary hairs does not shed much light on its affinities within Barbula, but a position close to B. cylindrica is probably the most appropriate.

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