Eucalyptus deglupta is a species of tall tree, commonly known as the rainbow eucalyptus, Mindanao gum, or rainbow gum that is native to the Philippines, Indonesia, and Papua New Guinea. It is the only Eucalyptus species that usually lives in rainforest, with a natural range that extends into the northern hemisphere. It is characterized by multi-colored bark. Description Eucalyptus deglupta is a fast-growing tree that typically reaches a height of with the trunk up to in diameter and with buttresses up to high. It has smooth, orange-tinted bark that sheds in strips, revealing streaks of pale green, red, orange, grey, and purplish brown. The branchlets are roughly square in cross section, often with narrow wings on the corners. The leaves are arranged in opposite pairs, mostly long and wide on a short petiole. The flower buds are arranged in a branching inflorescence in leaf axils, or on the end of branchlets, each branch with groups of seven buds, the individual buds on a pedicel about long. Mature buds are pale green or cream-colored, roughly spherical in shape and in diameter with a hemispherical operculum with a small point on the top. Flowering time depends on location, and the stamens that give the flowers their colour are white and pale yellow. The fruit is a woody, brown, hemispherical capsule about long and wide, with three or four valves extending beyond the rim of the fruit. Each cell of the fruit contains between three and twelve minute brown seeds, each with a small wing. Taxonomy and naming Eucalyptus deglupta was first formally described in 1850 by Carl Ludwig Blume who published the description in his book Museum Botanicum Lugduno-Batavum sive stirpium Exoticarum, Novarum vel Minus Cognitarum ex Vivis aut Siccis Brevis Expositio et Descriptio from material collected in mountain forests in the Celebes. The specific epithet (deglupta) is a Latin word meaning "peeled off, husked or shelled". In 1914, Adolph Daniel Edward Elmer described Eugenia binacag in Leaflets of Philippine Botany, the specific epithet binacag a local name for the tree, but in 1915 changed the name to Eucalyptus binacag. However, the species had already been named E. deglupta by Blume in 1850 and E. binacag is now regarded as a synonym. In 1854, Asa Gray described Eucalyptus multiflora in United States Exploring Expedition - Botany, Phanerogamia from an unpublished description by Louis Claude Richard, but is a nomen illegitimum because the