Pottiaceae (Bryophyta)
Barbula nigrescens Mitt.
J. Proc. Linn. Soc., Bot. Suppl. 1: 36. 1859
Specimen 1: Syntype -- R. Strachey 16/13
Specimen 2: Holotype 169
Specimen 3: Syntype -- R. Strachey 13
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