It consists of more than 130 tropical species, with the center of diversity being Australia and Polynesia.
22.
Their center of diversity is in southern Africa, but one species occurs as far north as South Sudan.
23.
Like many other seamounts, Cobb Seamount acts as a biological center of diversity, and supports a dense oceanic ecosystem.
24.
They are widely distributed, with the centers of diversity for the group occurring in tropical regions, particularly the Americas.
25.
The genus is endemic to the Mediterranean area, having its center of diversity in the Iberian Peninsula and North Africa.
26.
The center of diversity, and suggested area of domestication, for the crop is in the Sahel zone of West Africa.
27.
It is a center of diversity for the tree genera " Magnolia " and " Michelia ", and the families Elaeocarpaceae and Elaeagnaceae.
28.
This epiphytic genus occurs in wet forests from sea level to altitudes under 1500 m, with the Peruvian Andes as its center of diversity.
29.
"' Phrymaceae "', also known as the lopseed family, is a small centers of diversity, one in Australia, the other in western North America.
30.
The "'Polemoniaceae "'are a plants, native to the Northern Hemisphere and South America, with the center of diversity in western North America, especially in California.
