Schistidium lewis-smithii (Bryopsida, Grimmiaceae) - a new species from the maritime Antarctic, with a note on the Australian S. flexifolium
Schistidium lewis-smithii Ochyra is described as a new species from King George and Livingston Islands in the South Shetland Islands archipelago in the maritime Antarctic. It belongs within subgenus Canalicularia Ochyra and the diagnostic characters are the broadly canaliculate, decurrent leaves with erect to incurved leaf margins, elliptical costa in transverse section and gymnostomous capsules. The status of the Australian Schistidium flexifolium (Hampe) Ochyra is briefly discussed and S. aquaticum Ochyra from New Zealand is considered to be conspecific with it. A key to the species of subg. Canalicularia is given.