Hawaii (USA)

The elevational tree distribution in Hawaii is a classical example of missing treeline taxa. Exotics such as European spruce or warm temperate Australian Eucalypts form large and vigorous trees at elevations far above the elevation at which native tree taxa are able to grow.

	Native trees	Exotic trees
	1 - Sophora chrysophylla "treeline", Mauna Kea, 3000 m (a) 1 - Sophora chrysophylla "treeline", Mauna Kea, 3000 m (a)	2 - Eucalyptus sp., Mauna Kea observatory visitor center at 3000 m (a) 2 - Eucalyptus sp., Mauna Kea observatory visitor center at 3000 m (a)
	3 - Santalum haleakalae "treeline", Haleakala National Park, 2750 m (b) 3 - Santalum haleakalae "treeline", Haleakala National Park, 2750 m (b)	4 - Picea abies, 2800 m (b) 4 - Picea abies, 2800 m (b)
	5 - Metrosideros polymorpha "treeline", Haleakala National Park, 2450 m (b) 5 - Metrosideros polymorpha "treeline", Haleakala National Park, 2450 m (b)