Hydnocarpus hainanensis (Merr.) Sleumer

Species

Angiosperms > Malpighiales > Achariaceae > Hydnocarpus

Characteristics

Trees, evergreen, 6-12 m tall; bark gray-brown; branchlets terete, glabrous. Petiole 1-1.5 cm, glabrous or initially sparsely appressed-pubescent, glabrescent; leaf blade usually oblong, less often elliptic, narrowly ovate, or slightly obovate, 9-18 × 3-6 cm, 2-3 × as long as wide, thinly leathery, both surfaces glabrous, lateral veins 7 or 8 pairs, reticulate veins conspicuous, base acute to obtuse or rounded, cuneate, margin irregularly repand, serrulate or serrate, teeth sometimes sharply acute, leaf apex acute to obtuse, usually gradually or abruptly acuminate, acumen to ca. 2 cm. Inflorescence axillary or subterminal, 1.5-2.5 cm; flowers unisexual, 15-20 in much condensed (especially staminate flowers) shortly pedunculate cymes. Pedicels 8-15 mm, initially with sparse, short, appressed hairs, soon glabrous. Sepals 4, free, elliptic or orbicular, 5-6 × ca. 4 mm, both sides glabrous or outside sparsely appressed-hairy. Petals 4, free, reniform-ovate, 2-3 × 3-4 mm, both sides (excl. scale) glabrous, margin ciliate; scale ca. 1/2 as long as petal, irregularly 4-6-dentate, villous. Staminate flowers: stamens ca. 12; filaments ca. 1.5 mm, stout at base, sparsely hairy, hairs rather long, drying white; anthers sagittate, 1.5-2.5 mm; reduced ovary absent. Pistillate flowers: staminodes ca. 15, stamenlike but with anthers reduced, indumentum as for fertile stamens; ovary ovoid-ellipsoid, very densely yellowish brown pubescent, hairs closely appressed; placentas 5; ovules many; styles absent; stigmas 3 or 4, joined at base, flattened-deltoid, ca. 5 mm, bifid with each branch apex irregularly toothed or lobed, abaxially densely hairy at base, hairs as for ovary, adaxially glabrous. Berry globose, 4-5 cm in diam., densely pale to dark brown or yellowish tomentose, sometimes yellowish; pericarp leathery, exocarp not fibrous, stalk 6-7 mm, stout. Seeds ca. 20, ovoid, ca. 2.5 × 1.5-2 cm. Fl. Apr-May, fr. Jun-Aug.
Life form -
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality -
Pollination entomogamy
Spread -
Mature width (meter) -
Mature height (meter) 8.0 - 11.0
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

Evergreen broadleaved forests at elevations from 300-1,800 metres.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 7-12

Usage

Uses medicinal oil wood
Edible -
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

Hydnocarpus hainanensis world distribution map, present in China and Viet Nam

Conservation status

Hydnocarpus hainanensis threat status: Vulnerable

Identifiers

LSID urn:lsid:ipni.org:names:365623-1
WFO ID wfo-0001253384
COL ID 6MHH9
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Taraktogenos hainanensis Hydnocarpus hainanensis