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(Upload on April 17 2025) [ 日本語 | English ]

One species, one genus, and one family ⇒ Engler's syllabus (エングラー体系) Trochodendraceae Eichler (ヤマグルマ科) Trochodendron Siebold et Zucc. T. ralioides Siebold et Zucc. (ヤマグルマ, 山車), wheel tree f. longifolium (Maxim.) Ohwi (ナガバノヤマグルマ) Lifeform: evergreen tree with 5-20 m in height Distribution: Taiwan - southern Korea - Japan (south to Yamagata Prefecture) Habitat: tending to establish on exposed rocks Flowering: mid-May to mid-June

別名トリモチノキ。樹皮からトリモチができる。導管持たず、分類学上、原始的植物と考えられてきた Evergreen tree or large shrub, up to 5-15 (-20 m in height. Native to SE areas of Japan with an E Asia endemic distribution. Yellowish green flowers with ca. 50 stamens surrounding 5-10 carpels open in middle of May to middle of June. The wood has secondary xylem without vessel elements: a feature quite unusual in angiosperms. The sole species in the genus, and sometimes used for bird liming, made from its bark (樹皮). (on Mount Misen (弥山), 2014/03/16)

Trochodendron aralioides in Japan

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[1-3] in the Wakayama Experimental Forest of Hokkaido University on June 26 2024.