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Calocedrus decurrens
・ Calocedrus formosana
・ Calocedrus huashanensis
・ Calocedrus macrolepis
・ Calocedrus rupestris
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・ Calocephalus aervoides
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Calocedrus decurrens : ウィキペディア英語版
Calocedrus decurrens

''Calocedrus decurrens'', with the common names incense cedar and California incense cedar (syn. ''Libocedrus decurrens'' Torr.), is a species of conifer native to western North America, with the bulk of the range in the United States, from central western Oregon through most of California and the extreme west of Nevada, and also a short distance into northwest Mexico in northern Baja California. It grows at altitudes of 50–2900 m. It is the most widely known species in the genus, and is often simply called 'incense cedar' without the regional qualifier.〔Flora of North America: (''Calocedrus decurrens'' )〕〔U.S. Forest Service Silvics Manual: (''Libocedrus decurrens'' )〕〔Farjon, A. (2005). ''Monograph of Cupressaceae and Sciadopitys''. Royal Botanic Gardens, Kew. ISBN 1-84246-068-4〕
==Description==
''Calocedrus decurrens'' is a large tree, typically reaching heights of and a trunk diameter of up to . The largest known tree is tall with a diameter trunk.〔Gymnosperm Database: (''Calocedrus decurrens'' )〕 It has a broad conic crown of spreading branches. The bark is orange-brown weathering grayish, smooth at first, becoming fissured and exfoliating in long strips on the lower trunk on old trees.
The foliage is produced in flattened sprays with scale-like leaves long; they are arranged in opposite decussate pairs, with the successive pairs closely then distantly spaced, so forming apparent whorls of four; the facial pairs are flat, with the lateral pairs folded over their bases. The leaves are bright green on both sides of the shoots with only inconspicuous stomata.〔 The foliage, when crushed, gives off an aroma somewhat akin to shoe-polish.
The seed cones are long, pale green to yellow, with four (rarely six) scales arranged in opposite decussate pairs; the outer pair of scales each bears two winged seeds, the inner pair(s) usually being sterile and fused together in a flat plate. The cones turn orange to yellow-brown when mature about 8 months after pollination. The pollen cones are long.〔

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「Calocedrus decurrens」の詳細全文を読む



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