Northeastern Asian Flora - Mallotus japonicus

Mallotus japonicus

Accepted Taxa

Japan Flora: Deciduous tree, with dense reddish stellate scales while young, grayish afterward, the branches rather thick; leaves rounded-obovate to broadly ovate, 10-20 cm. long, 6-15 cm. wide, acute, rounded at base, shallowly 3-fid, sometimes entire or undulate, 3-nerved, with parallel vein lets, pale yellowish green beneath with yellow sessile glands, 2 glands just above the base, the petioles rather long; inflorescence a panicle, &，20 cm. long, the branches elongate in the staminate; staminate flowers with calyx about 3 mm. long and numerous stamens 6-7 mm. long; pistillate flowers short-pedicellate on shorter branches of the panicles; capsules trigonous-globose, about 7 mm. across, densely lepidote and with yellowish brown glandular dots, and sparsely armed with soft spinelike protuberances, densely stellate-pilose while young, 3-valved, the valves bifid; seeds dark brown, about 4 mm. long, obscurely tuberculate. June. Thickets and thin woods in lowlands.

Honshu, Shikoku, Kyushu; common. Ryukyus, Formosa, China, and Korea

Korea Flora: Deciduous small tree up to 10m, winter buds naked, terminal larger than later buds, 10-13mm long with dense reddish stellate scales while young, grayish afterward, leaf scars round; leaves alternate, broadly ovate, 10-20cm × 6-15cm, acute, rounded at base, shallowly 3-fid, entire, 3-nerved, pale yellowish green beneath with yellow sessile glands, the petioles rather long; flowers dioecious, inflorescence a panicle, 8-20 cm. long, the branches elongate in the staminate; staminate flowers with 3-4 calyx and 50-80 stamens 10 mm. long; pistillate flowers a few with 1 bract, calyx 3-5, carpels 3; capsules trigonous-globose, about 7 mm. acrosswith yellowish brown glandular dots, and armed with soft spinelike protuberances, densely stellate-pilose while young, 3-valved, the valves bifid; seeds dark brown, globose about 4 mm. long, obscurely tuberculate.

Flowering late June to mid July (late Augus in Haenam)
Fruting mid Aug to early Oct
Distribution Taiwan, Japan west Honshu to Ryukyu through Kyushu and Shikoku; Chungcheonnam-do, Jella-do, Gyongsannam-do, Jeju
Ecological characteristics Shade intolerant in logging or disturbed areas, fast growing pioneer species.

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Mallotus japonicus Accepted Taxa Mallotus japonicus Mallotus oreophilus Japan Flora Korea Flora Resources Japan Flora: Deciduous tree, with dense reddish stellate scales while young, grayish afterward, the branches rather thick; leaves rounded-obovate to broadly ovate, 10-20 cm. long, 6-15 cm. wide, acute, rounded at base, shallowly 3-fid, sometimes entire or undulate, 3-nerved, with parallel vein lets, pale yellowish green beneath with yellow sessile glands, 2 glands just above the base, the petioles rather long; inflorescence a panicle, &，20 cm. long, the branches elongate in the staminate; staminate flowers with calyx about 3 mm. long and numerous stamens 6-7 mm. long; pistillate flowers short-pedicellate on shorter branches of the panicles; capsules trigonous-globose, about 7 mm. across, densely lepidote and with yellowish brown glandular dots, and sparsely armed with soft spinelike protuberances, densely stellate-pilose while young, 3-valved, the valves bifid; seeds dark brown, about 4 mm. long, obscurely tuberculate. June. Thickets and thin woods in lowlands. Honshu, Shikoku, Kyushu; common. Ryukyus, Formosa, China, and Korea Korea Flora: Deciduous small tree up to 10m, winter buds naked, terminal larger than later buds, 10-13mm long with dense reddish stellate scales while young, grayish afterward, leaf scars round; leaves alternate, broadly ovate, 10-20cm × 6-15cm, acute, rounded at base, shallowly 3-fid, entire, 3-nerved, pale yellowish green beneath with yellow sessile glands, the petioles rather long; flowers dioecious, inflorescence a panicle, 8-20 cm. long, the branches elongate in the staminate; staminate flowers with 3-4 calyx and 50-80 stamens 10 mm. long; pistillate flowers a few with 1 bract, calyx 3-5, carpels 3; capsules trigonous-globose, about 7 mm. acrosswith yellowish brown glandular dots, and armed with soft spinelike protuberances, densely stellate-pilose while young, 3-valved, the valves bifid; seeds dark brown, globose about 4 mm. long, obscurely tuberculate. Flowering late June to mid July (late Augus in Haenam) Fruting mid Aug to early Oct Distribution Taiwan, Japan west Honshu to Ryukyu through Kyushu and Shikoku; Chungcheonnam-do, Jella-do, Gyongsannam-do, Jeju Ecological characteristics Shade intolerant in logging or disturbed areas, fast growing pioneer species.
Development supported by College of Agriculture and Life Sciences of Seoul National University and Korea National Arboretum of Korea Forest Service. Powered by Symbiota.