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Clerodendrum japonicum (Thunb.) Sweet

Japanese glorybower (en)

Species

Angiosperms > Lamiales > Lamiaceae > Clerodendrum

Characteristics

Shrubs 1-4 m tall. Branchlets 4-angled, pubescent to subglabrous, nodes sometimes villous. Petiole 0.5-15(-27) cm, densely yellow-brown pubescent; leaf blade subcordate, 8-35 X 6-27 cm, sparsely pubescent, abaxially densely covered with numerous peltate glands often covered with a sand-colored secretion, base cordate, margin sparsely serrulate to dentate, apex acuminate to acute. Inflorescences terminal thyrses, 15-34 X 13-35 cm; bracts and bractlets usually reddish. Calyx red, 1-1.5 cm, deeply 5-lobed, pubescent, outside sandy glandular; lobes ovate-lanceolate to ovate, 0.7-1.3 cm. Corolla white or red, tube 1.5-2.2 cm; lobes oblong, 1-1.5 cm. Stamens and style 3 X or more longer than corolla tube. Fruiting calyx much longer than fruit, becoming reflexed. Drupes green when young, blue-black at maturity, subglobose, 7-10 mm in diam. Fl. and fr. May-Nov.
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A shrub. It loses its leaves during the year. It grows about 2 m high. The leaves are opposite. They are 5-17 cm long by 3.5-18 cm wide. They are broadly oval. The base is heart shaped and taper towards the point. It has small rounded teeth around the edge. The flowers are red and in large spreading panicles. The fruit are round. They become black when ripe. They have a red outer covering.
A shrub with large, cordate-ovate lvs and large terminal infl of bright-red, slightly irregular fls, the cor 1.5–2 cm, the stamens and style long-exsert, rarely escapes from cult. in our range.
White or pink flowers in dense terminal heads
A small erect subherbaceous shrub
Life form perennial
Growth form shrub
Growth support climber
Foliage retention deciduous
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) 1.0
Mature height (meter) 2.5
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway -

Environment

Thickets in valleys, along streams and in grassy openings; at elevations from 100-1,200 metres. Moist gullies and shady places; at elevations up to 1,600 metres in Nepal.
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Thickets in valleys, along streams and in grassy openings; at elevations from 100-1,200 metres. Moist gullies and shady places; at elevations up to 1,600 metres in Nepal.
A tropical plant. It grows up to 1600 m altitude in Nepal. It grows in valleys, open spaces and in forests. In XTBG Yunnan. In Sichuan.
Introduced and occasionally naturalised.
Light 6-8
Soil humidity 4-7
Soil texture 2-5
Soil acidity 3-7
Soil nutriment -
Hardiness (USDA) 9-11

Usage

The young leaves and shoots are cooked as a vegetable or pickled. The flowers are eaten in salads and used as a potherb.
Uses environmental use material medicinal potherb
Edible flowers leaves shoots stems
Therapeutic use Parasympatholytics (flower), Parasympatholytics (leaf), Parasympatholytics (root), Gonorrhea (unspecified), Hematachezia (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Plants are grown by seeds or stem cuttings.
Mode cuttings seedlings
Germination duration (days) 21 - 60
Germination temperacture (C°) 21 - 23
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Leaf

Clerodendrum japonicum leaf picture by Hubert LELACHE (cc-by-sa)

Flower

Clerodendrum japonicum flower picture by Hubert LELACHE (cc-by-sa)
Clerodendrum japonicum flower picture by Dieter Albrecht (cc-by-sa)

Distribution

Clerodendrum japonicum world distribution map, present in Andorra, Bangladesh, China, Japan, Lao People's Democratic Republic, Nepal, Philippines, Korea (Democratic People's Republic of), Thailand, Taiwan, Province of China, United States of America, and Viet Nam

Conservation status

Clerodendrum japonicum threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:862167-1
WFO ID wfo-0000882935
COL ID W3VG
BDTFX ID -
INPN ID 629356
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Volkameria coccinea Volkameria japonica Volkameria kaempferi Clerodendrum coccineum Clerodendrum darrisii Clerodendrum imperialis Clerodendrum kaempferi Clerodendrum leveillei Clerodendrum speciosum Clerodendrum squamatum Clerodendrum illustre Clerodendrum dentatum Clerodendrum japonicum f. album Clerodendrum kaempferi f. album Clerodendrum kaempferi f. salmoneum Clerodendrum japonicum Clerodendrum japonicum var. album Clerodendrum kaempferi var. album (c.p'ei) Volkameria dentata Clerodendrum coccineum

Lower taxons

Clerodendrum japonicum var. bethuneanum
WorldFloraDB 2024