Seven liverwort species new or confirmed from subantarctic Prince Edward Island

Abstrakt

Seven species of liverwort are reported from subantarctic Prince Edward Island in the Prince Edward Islands archipelago. Five of these, Hygrolembidiumventrosunz, Clasmatocolea rigens, Anastrophyllum auritum, Andrewsianthus marionensis and Tylimanthus viridis, are new additions and the occurrence of Marchantia berteroana and Clasmatocolea vermicularis is confirmed for the island's flora.

Global distribution maps for Hygrolembidium ventrosum, Clasmatocolea rigens and Tylimanthus viridis are provided. Considering these records, the liverwort flora of the Prince Edward Island now totals 42 species and is much richer in the number of species than that of the much larger Iles Kerguelen.

Klíčová slova

• Biodiversity
• Kerguelen Biogeographical Province
• Marchantiophyta
• phytogeography
• Prince Edward Islands
• South Indian Ocean Province
• Southern Ocean
• Subantarctica