Eucalyptus gigantangion
Eucalyptus gigantangion, commonly known as Kakadu woollybutt, is a species of tree that is endemic to the Northern Territory. It has soft, fibrous bark most of the trunk, smooth white bark above, narrow lance-shaped adult leaves, flower buds in groups of seven, orange-coloured flowers and ribbed, urn-shaped fruit. Description. "Eucalyptus gigantangion" is a tree that typically grows to a height of and forms a lignotuber. It has rough but soft, fibrous, orange-brown to red-brown, dark grey or black bark over most of the trunk with the upper trunk and branches covered with smooth  white bark. Young plants and coppice regrowth have broadly lance-shaped to egg-shaped leaves that are long and wide. Adult leaves are arranged alternately, dull green to blue-green but lighter on one side, narrow lance-shaped, long and wide, the base tapering to a petiole long. The flower buds are arranged in groups of seven on a peduncle long, the individual buds more or less sessile. Mature buds are spindle-shaped, long and wide with ribs on the sides, four small teeth at the tip, and a conical operculum. Flowering occurs from July to August and the flowers  are orange. The fruit is a woody urn-shaped capsule long and wide with ribs on the sides and the valve enclosed below rim level. Taxonomy and naming. "Eucalyptus gigantangion" was first formally described in 1991 by the botanists Lawrie Johnson and Ken Hill in the journal "Telopea". The specific epithet ("gigantangion") "is derived from the Ancient Greek words "gigas", "gigantos", a giant and "aggeion" (usually transliterated as "angion"), a vessel or receptacle, from the extremely large fruits". Distribution and habitat. Kakadu woollybutt grows in savanna forests with "Triodia" and shrubs in the understorey. It is found near the upper  edge of sandstone cliffs on the Arnhem Land escarpment, mostly only in Kakadu National Park.