Yamaguruma - Yamaguruma

Japanese: ヤマグルマ - やまぐるま
Yamaguruma - Yamaguruma

An evergreen tall tree of the family Acanthaceae (APG classification: Acanthaceae). Also called aviculturate. The trunk is upright and can reach a height of 15 meters or more. The leaves have long stalks and grow in a slightly whorled pattern at the ends of the branches. The leaf blade is narrowly obovate or obovate with a pointed tip, blunt sawtooth on the upper edge, and is leathery and shiny. In June, racemes are formed at the ends of the branches, and several or many yellow-green flowers with long stalks bloom. There are no perianth pieces, and there are many stamens. The pistil has 5 to 10 carpels arranged in a ring shape. The fruit consists of 5 to 10 capsules, about 1 cm in diameter. It grows in mountain forests and is distributed from Honshu west of the Chubu region to Okinawa and China. It is a rare plant with one family, two genera, and two species with almost no related species. The name comes from the fact that the leaves grow in a wheel shape at the ends of the branches. The other name comes from the fact that in the past, bird cakes were made from the bark.

[Kyoshio Furusawa May 19, 2020]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

ヤマグルマ科(APG分類:ヤマグルマ科)の常緑高木。トリモチノキともいう。幹は直立性で、高さ15メートル以上になる。葉は長い柄があり、枝先にやや輪生状につく。葉身は狭倒卵形または倒卵形で先端はとがり、縁(へり)の上部に鈍鋸歯(どんきょし)があり、革質で光沢がある。6月ころ、枝先に総状花序をつくり、長い柄のある黄緑色花を数個または多数開く。花被片(かひへん)はなく、雄しべは多数。雌しべは5~10枚の心皮が輪状に並ぶ。果実は5~10個の袋果からなり、径約1センチメートル。山地の林内に生え、中部地方以西の本州から沖縄、および中国に分布する。1科2属2種で類縁関係のものがほとんどない珍しい植物である。名は、枝先に葉が車輪状につくことによる。別名は、昔、樹皮からとりもちを製したことによる。

[古澤潔夫 2020年5月19日]

出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例

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