Northeastern Asian Flora
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Clerodendrum trichotomum Thunb.   (redirected from: Clerodendrum trichotomum f. albicarpum Satomi)
Family: Verbenaceae
[Clerodendrum fargesii Dode, moreClerodendrum izuinsulare K.Inoue, M.Haseg. & S.Kobay., Clerodendrum koshunense Hayata, Clerodendrum serotinum Carri?e, Clerodendrum trichotomum f. albicarpum Satomi, Clerodendrum trichotomum f. ferrugineum (Nakai) Ohwi, Clerodendrum trichotomum var. esculentum Makino, Clerodendrum trichotomum var. fargesii (Dode) Rehder, Clerodendrum trichotomum var. ferrugineum Nakai, Clerodendrum trichotomum var. izuinsulare (K.Inoue, M.Haseg. & S.Kobay.) H.Ohba & S.Akiyama, Clerodendrum trichotomum var. tomentosum Moldenke, Clerodendrum trichotomum var. villosum Hus, Clerodendrum trichotomum var. yakusimense (Nakai) Ohwi, Siphonanthus trichotomum (Thunb.) Nakai, Siphonanthus trichotomum var. fargesii (Dode) Nakai, Siphonanthus trichotomus , Siphonanthus trichotomus var. esculenta (Makino) Nakai, Siphonanthus trichotomus var. fargesii (Dode) Nakai, Siphonanthus trichotomus var. ferrugineum Nakai, Siphonanthus yakusimensis Nakai]
Clerodendrum trichotomum image
Chin Sung Chang
  • Korea Flora
  • Japan Flora
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Korea Flora: Deciduous shrub. Height 2m. Winter buds and twigs smooth, a single terminal bud conical and pointed at the tip. Lateral buds opposite, smaller than the terminal bud, 1-3mm long and slightly reddish. Terminal and pseudo-terminal buds present, with accessory buds. Branches  hairless. Leaf scars circular or semicircular, with 7-8 vascular bundle scars. Leaves opposite, broadly ovate, acuminate at apex, cuneate or truncate at base, 8-20cm × 5-13cm in size. Upper surface green and hairless, while the lower surface hairs on the veins and scattered faint glands. Leaf margins smooth or with large teeth. Petioles 3-10cm long with hairs. Flowers cymes at the ends of new branches, with or without hairs. Calyx red, deeply divided into 5 ovate or oblong lobes. Corolla 30mm in diameter, with 5 oblong white petals. Fruit and seeds round, 6-8mm in diameter, blue, initially enclosed by the red calyx before emerging. 

Flowering: Mid-July to mid-August (early June in Gyeonggido)

Fruiting: Late September to mid-October

Distribution: China, Taiwan, northern Philippines, southern Hokkaido to Okinawa in Japan; south of Gangwon-do and Hwanghae-do in Korea.

Ecological characteristics: Light-demanding species, grows in areas with abundant light such as logged areas and roadsides. Fast-growing.

Taxonomic notes: The English version of the Flora of China reports C. cyrtophyllum Turcz. as distributed in south-central China, Malaysia, and Vietnam, as well as in Korea. It has narrower leaves (about 5cm wide, oblong-ovate) compared to C. trichotomum (9-10cm wide, broadly ovate) and slightly smaller flowers (about 2cm long vs. 3cm for C. trichotomum). Such individuals are mainly found in the island regions of Jeollanam-do.

Japan Flora: Large shrub or small tree with rather thick terete branches; leaves membranous, deltoid-ovate, narrowly deltoid, or broadly ovate, 8-15 cm. long, 5-10 cm. wide, gradually acuminate, somewhat rounded at base, obsoletely toothed or subentire, 3- nerved from the base, sometimes thinly pubescent above, pu­bescent beneath especially on nerves, obsoletely glandular* dotted, long-petiolate; cymes in large terminal corymbs; calyx deeply 5-lobed, about 15 mm. long, reddish, the lobes ovate, acuminate, spreading in fruit; corolla-tube 2-2.5 cm. long, the limb 2.5-3 cm. across, white; fruit globose, dark blue, lustrous, 6-7 mm. across, subtended by the persistent spreading calyx. Aug .-Sept.

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

f. ferrugineum (Nakai) Ohwi. Plant densely pubescent. 

var. esculentum Makino. Leaves cordate, long-acuminate; inflorescence shorter; calyx-lobes narrower. 

var. yakusimense (Nakai) Ohwi. Plant less pubescent and with fewer flowers and thicker lus­trous leaves. 

Clerodendrum trichotomum
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Clerodendrum trichotomum image
Chin Sung Chang
Clerodendrum trichotomum image
Chin Sung Chang
Clerodendrum trichotomum image
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Clerodendrum trichotomum image
Chin Sung Chang
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Development supported by College of Agriculture and Life Sciences of Seoul
National University and Korea National Arboretum of Korea Forest Service.
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