An evergreen tall tree of the pine family native to Japan with needles similar to fir, it grows deep in the mountains and is not abundant. It can reach a height of 40m and a diameter of 1m, with dark brown bark on the trunk that splits vertically and peels off in scales. The thick branches spread out horizontally to form a cone-shaped crown, and the one-year-old branches are pale yellow. The needles are linear, and the pits where they fell (pulvini) are slightly raised on the branch surface. In April, axillary male flowers appear in clusters on the previous year's branches, and female cones appear at the tips of the previous year's branches. Around October, egg-shaped, woody yellow-brown cones 4-6cm long ripen and grow downward. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
モミに似た針葉をもつ日本固有のマツ科の常緑高木で,深山に生え,量は多くない。高さ40m,直径1mに達し,幹の樹皮は暗褐色で,縦に裂け,鱗片状に剝げる。太枝は横に張って円錐形の樹冠をつくり,一年生枝は淡黄色。針葉は線形でその落ちた跡(葉枕(ようちん))は枝面に少し隆起している。4月に前年の枝に腋生(えきせい)の雄花が群がってつき,雌球花は前年枝の先端につく。10月ごろ卵形で長さ4~6cmの木質黄褐色の球果が熟して下向きにつく。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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