page_title: Corymbia calophylla
section_title: Description
hierarchical_section_title: Corymbia calophylla / Description
caption_attribution_description: English: Bark and gum from Corymbia calophylla, Greenmount National Park, Western Australia
context_page_description: Corymbia calophylla is a large and common tree in the southwest of Australia.
  Originally described as a species of Eucalyptus, it was separated to a genus allied with the bloodwoods and their relations. Corymbia calophylla is commonly known as marri, a name derived from the Noongar language of Southwest Australia region, in preference to the ambiguous red gum. The trunk responds to damage by insects by exuding a red, blood-like substance, a type of kino, that is able to be collected for a variety of uses. Able to establish itself as a very large tree, the fast growing species often colonises and out-competes other woody species in disturbed areas. The large green leaves of marri will create well-shaded areas that impede other plants' growth and a create a comfortable refuge or habitat for a large number of animals. The complex fissures and bark of the trunk and branches are also utilised by a diverse array of organisms.
context_section_description: Corymbia calophylla is a large tree, or a mallee in poor soil, and that typically grows to a height of 40 metres (131 ft), but can reach 60 metres (197 ft). The trunk of the tree may become up to 2 m (6 ft 7 in) wide, the branches becoming large, thick and rambling. 
  It has rough, tessellated, grey-brown to red-brown bark that extends over the length of the trunk and branches. 
  Adult leaves are arranged alternately, thick and the same shade of glossy green on both sides, broadly lance-shaped to egg-shaped and tapered or rounded at the base. The leaf blade is 9 to 14 centimetres (4 to 6 in) long and 25 to 40 millimetres (0.98 to 1.57 in) wide with a narrowly flattened or channelled petiole 15 to 20 mm (0.59 to 0.79 in) long. 
  It blooms between December and May, producing white to pink flowers. The flower buds are arranged on the ends of branchlets on a branched peduncle that is circular or angled in cross-section. Each branch of the peduncle has buds in groups of three or seven on pedicels 6–37 mm (0.24–1.46 in) long. Mature buds are club-shaped or pear-shaped, 6–14 mm (0.24–0.55 in) long and 6–10 mm (0.24–0.39 in) wide with a flattened operculum. The fruits or gumnuts form later and can remain on the tree for a year or more. They are oval to urn-shaped, 30–50 mm (1.2–2.0 in) long and 25–40 mm (0.98–1.57 in) wide on a pedicel 7–40 mm (0.28–1.57 in) long.
  The large nuts produced carry large seeds which are an important food source for native bird species such as cockatoos. The tree propagates readily from seeds. It is distinctive among bloodwoods for its very large buds and fruit, colloquially known as honky (or honkey) nuts, in Western Australia.
caption: red kino at fire damaged trunk
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