Physcomitrium allardiae N. Wilding & Ah-Peng, sp. nov. (Funariaceae), a new species with immersed, cleistocarpic capsules from Tanzania

Physcomitrium allardiae N. Wilding & Ah-Peng, sp. nov. (Funariaceae) is described and illustrated based on a single collection from highlands in the Uluguru mountains of Tanzania. The new species was collected growing on soil, among a dense mat of liverworts, in high altitude Podocarpus-Allanblackia mist forest. Physcomitrium allardiae N. Wilding & Ah-Peng, sp. nov. can be distinguished from all other members of the genus by its strongly bordered leaves, sub-spherical, non-rostellate, capsules, and spores with baculate-insulate surface ornamentation.