Holarrhena curtisii King & Gamble

Species

Angiosperms > Gentianales > Apocynaceae > Holarrhena

Characteristics

Shrub to 2.5 m. Branchlets densely to sparsely pubescent. Leaves: petiole 1-4 mm; blade subcoriaceous when dry, obovate or elliptic, 3-12.6 by 1-7.3 cm, 1.5-5 times as long as wide, apex rounded, apiculate or retuse, less often acute or acuminate (especially in Peninsular Thailand), base cuneate, less often rounded or obtuse, first leaves on branch generally much smaller and strongly emarginate; pubescent on both surfaces, rarely almost glabrous. Inflorescence a terminal cyme, rarely appearing axillary, 3-12.5 cm long, lax, pubescent. Sepals linear, 2.5-7.5 by 0.8-1.2 mm, 3-7.5 times as long as wide, pubescent outside and inside, colleters few or absent near the base. Corolla tube 9-22 mm long; lobes (5-)12-23 by 3.8-9 mm, obovate to elliptic, apex rounded. Stamens inserted at 1.6-2.4 mm from corolla base; filaments 0.3-1.1 mm long, pubescent at base; anthers 1.3-2.5 by 0.5-0.6 mm. Ovaries 0.7-1.1 mm long; style and style head 1.4-2.2 mm. Fruit erect, at least when young, 7-30 cm by 1.5-5 mm. Seeds pubescent, 8.2-15 by 1.8-2.5 mm, coma 32-66 mm long.
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A shrub. It grows 1-2 m tall. It has a rootstock that lasts from year to year and tufts of shoots develop from this. The branches are grey. They can have white dots. The leaves are narrowly oval and 2-10 cm long by 1-4 cm wide. They are rounded or wedge shapes at the base. They are hairy. The flowers are at the top. The flowers are white. The fruit are pale to dark brown and 11-33 cm long by 3-8 mm wide. The seeds are 8-14 mm long with a tuft of hairs at the tip.
Life form perennial
Growth form shrub
Growth support -
Foliage retention
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 2.25
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

A tropical plant. It grows in clear forests on sandy soils. It can grow in mangrove swamps or savannahs. It grows from sea level to 400 m above sea level.
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Secondary rain forest, mixed deciduous forest, bamboo forest, scrub woodland, savannah and mangrove swamps; at elevations up to 400 metres.
Light -
Soil humidity -
Soil texture 5-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

UsesThe bark and roots are used to treat dysentery.
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The flowers are eaten after quick cooking.
Uses medicinal
Edible flowers
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by seedlings.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Holarrhena curtisii world distribution map, present in Cambodia, Lao People's Democratic Republic, Malaysia, Thailand, and Viet Nam

Identifiers

LSID urn:lsid:ipni.org:names:79297-1
WFO ID wfo-0000982759
COL ID 3M778
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Holarrhena angustata Holarrhena crassifolia Holarrhena densiflora Holarrhena latifolia Holarrhena pulcherrima Holarrhena similis Holarrhena crassifolia var. montana Holarrhena curtisii