Trigonostemon howii Merr. & Chun

Species

Angiosperms > Malpighiales > Euphorbiaceae > Trigonostemon

Characteristics

Shrubs 2-4 m tall; branchlets densely yellow-hirsute, sparsely so at maturity. Leaves densely clustered in apparent whorls; stipules linear, hirsute, caducous; petiole 5-15 mm, hirsute; leaf blade oblanceolate to oblong-oblanceolate, 9-28 × 3.5-8 cm, papery to thinly leathery, abaxially purple-red and sparsely yellow hirsute, adaxially glaucous-green when dry and hirsute along midvein, base attenuate, obtuse to slightly cordate, margin entire or sparsely serrulate, ciliate, apex acute to shortly acuminate, sometimes acumen slightly inflected; lateral veins 10-12. Racemes or narrow panicles axillary, 15-25 cm, many flowered; peduncles densely hirsute; bracts linear, hirsute. Male flowers: sepals membranous, elliptic, ca. 1.5 mm, hirsute outside; petals obovate, ca. 3 mm, purple-red; stamens 3; connectives thickened, conspicuously produced. Female flowers: sepals unequal, ca. 2 mm; petals obovate, purple-red; disk crenellated; ovary densely hirsute; styles bifid at apex. Capsules subglobose, ca. 1 cm in diam., densely yellow hirsute. Seeds depressed globose, smooth. Fl. Jun-Jul, fr. Aug-Sep.
Life form perennial
Growth form
Growth support -
Foliage retention deciduous
Sexuality monoecy
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 2.0 - 4.0
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Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
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Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
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Germination treatment -
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Distribution

Trigonostemon howii world distribution map, present in China

Identifiers

LSID urn:lsid:ipni.org:names:358018-1
WFO ID wfo-0000328292
COL ID 58T9V
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Prosartema gaudichaudii Trigonostemon gagnepainianus Trigonostemon howii