A huge genus of trees which impart a distinctive aura of Australian forests. Their leaves are held vertically, and are commonly glaucous and resinous. The calyx forms an operculum which is thrown off when the flower opens. The receptacle is hollow, and woody in the fruit. There are many stamens. The fruit is a capsule. There are many seeds. Many eucalypts are widely cultivated as fast-growing timber trees. Jarrah is E. marginata; karri is E. diversicolor; mountain ash is E. regnans, the tallest tree in the world. There are about 450 species, most of which are confined to Australia.
Subjects: Plant Sciences and Forestry.