Antarctic floristic kingdom

Tasmania is omitted since its plant species are more closely related to those found in the Australian Floristic Kingdom.

The flora of the Antarctic kingdom dates back to the time of Gondwana, the southern supercontinent which once included most of the landmasses of the present-day Southern Hemisphere, though it has been influenced by the flora of the Holarctic kingdom since the Tertiary period.

Ronald Good noted, as had Joseph Dalton Hooker much earlier, that many plant species of Antarctica, temperate South America and New Zealand were very closely related, despite their disjunction by the vast Southern Ocean.

According to Ronald Good, about 50 genera of vascular plants are common in the Antarctic floristic kingdom, including Nothofagus and Dicksonia.

According to Takhtajan, the following families are endemic or subendemic to this kingdom: Thyrsopteridaceae, Lactoridaceae, Gomortegaceae, Hectorellaceae (Hectorella), Halophytaceae, Malesherbiaceae, Francoaceae, Aextoxicaceae, Vivianiaceae, Misodendraceae, Tribelaceae, Griseliniaceae[1] and Alseuosmiaceae.