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''Corymbia calophylla'' (also known as ''Eucalyptus calophylla'' R. Br.) is a bloodwood native to Western Australia. Common names include Marri and Port Gregory Gum, and a long-standing usage has been Red Gum due to the red gum effusions often found on trunks. It is distinctive among bloodwoods for its very large buds and fruit (colloquially "honky nuts" in Western Australia). In 2009, Parra-O and colleagues published a combined analysis of nuclear rDNA (ETS + ITS) and morphological characters published to clarify relationships within the genus ''Corymbia''. ''C. calophylla'' was found to form a natural group with two other Western Australian species ''C. ficifolia'' and ''C. haematoxylon''. They classified the group as section ''Calophyllae'' within the subgenus ''Corymbia''. It is related and somewhat similar to the Red-flowering Gum (''Corymbia ficifolia''). ''C. calophylla'' differs in being much larger (to about high in the wild), having very much larger buds and fruit, and having flowers that are usually white to pink instead of red. However, in some areas hybridisation makes identification difficult. Marri is widely distributed in the South-West of Western Australia, from north of Geraldton (28° S) to Cape Riche (34° S), and inland beyond Narrogin (32°56′S 117° E). It is found on the Swan Coastal Plain and on the Darling Scarp showing its adaptability to the different environments. It will grow on comparatively poor soil, but good specimens are considered an indicator of the better agricultural soils. ==Uses== Marri timber is increasingly featured in modern household furniture. The timber is honey coloured and has a unique vein structure. However, it is not used in construction as the wood structure exhibits complex faults. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Corymbia calophylla」の詳細全文を読む スポンサード リンク
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