Phytogeography

largest of the Earth's eight biogeographic realms

thumb|240px|Macaronesia

one of the Earth's eight biogeographic realms & six floristic kingdoms

one of the Earth's eight biogeographic realms

Phytogeography ( meaning also distribution) or botanical geography is the branch of biogeography that is concerned with the geographic distribution of plant species and their influence on the earth's surface. Phytogeography is concerned with all aspects of plant distribution, from the controls on the distribution of individual species ranges (at both large and small scales, see species distribution) to the factors that govern the composition of entire communities and floras. Geobotany, by contrast, focuses on the geographic space's influence on plants.

one of the Earth's eight biogeographic realms

In phytogeography, a phytochorion is a geographic area with a relatively uniform composition of plant species. Adjacent phytochoria do not usually have a sharp boundary, but rather a soft one, a transitional area in which many species from both regions overlap, called a vegetation tension zone, or ecotone.

state of animals well outside their normal range

one of the Earth's eight biogeographic realms

Floristics is the study of plants of geographical regions. It is a branch of phytogeography. Harvard University has a history of research with early contributions. For example, Asa Gray was a Harvard researcher who studied the plants of North America and its connections to Asia.

distinct community of plants which evolved on the supercontinent of Gondwana

hypothesis regarding ecology in formerly glaciated regions

agricultural practices of pre-historic native cultures in the eastern United States and Canada

population of a cold-adapted species remaining after its glacier habitat has receded

section of the Palearctic biogeographic realm