Dysoxylum oppositifolium F.Muell.

Species

Angiosperms > Sapindales > Meliaceae > Dysoxylum

Characteristics

Small tree to c. 10(–30) m; bole to 40 cm diam.; buttresses to 1.5 m tall. Bark flaking, yellow-brown; inner bark reddish. Twigs cicatrose. Leafy twigs c. 5–7 mm diam., pale brown in sicco, ± brownish puberulent; apical bud to 8 cm, stiletto-like. Leaves 15–45 cm, 3–6-jugate with apical scar, alternate to opposite; petiole 6–10 cm, drying yellowish, swollen at base, ± puberulent; rachis ± 4-angled, ± puberulent. Leaflets (the subapical the largest) (4–)8–17 by (2–)3.5–5.5 cm, oblong to elliptic, subcoriaceous, opposite or the more proximal sometimes alternate, subglabrous to pilose on midrib adaxially and on abaxial surface, particularly the venation, bases ± markedly asymmetric, rounded to acute, apices obtuse to shortly acuminate, costae c. 12–14 on each side, arcuate, obscurely looped, ± impressed adaxially, prominent abaxially; petiolules c. 3–6 mm, weakly swollen. Inflorescences 5–9 cm, racemose or thyrsoid, axillary or in axils of cicatroses; axes pubescent; branches to 8 mm, bearing 3-flowered cymules; pedicels c. 1 mm, articulated with very short pseudopedicels. Calyx c. 3 mm diam., puberulent without, margin 4-toothed, the teeth c. 1.5 mm long. Petals 4, c. 7 by 3–3.5 mm, oblong, obtuse, ± pubescent without, creamish. Staminal tube glabrous or very sparsely pubescent apically without, margin ± crenate; anthers 8, c. 1 mm long, ellipsoid, included. Disk c. 2 mm long and in diam., cupular, glabrous without, ± pubescent within, margin ± undulate. Ovary pubescent, 4-locular; style terete, pubescent in proximal half; stylehead discoid. Capsule c. 3 cm diam., apparently pyriform, 4-valved, veined, orange-black drying black. Seeds 2–4, c. 1 cm long, ellipsoid, with red (?) sarcotesta; cotyledons green.
More
Tree to 30 m high; bole to 40 cm diam., sometimes with buttresses to 1.5 m high; bark flaking. Leaves decussate, stiletto-like in bud, 15–45 cm long, paripinnate, 2–6-jugate with minute apical spike or its scar; petiole 7–10 cm long; leaflets opposite to alternate, oblong-elliptic, (4–) 8–17 cm long, (2–) 3.5–5.5 cm wide, usually acute at base, usually acuminate at apex, subglabrous to pilose on adaxial midrib and abaxial surface, usually with domatia in axils of very prominent abaxial lateral veins. Thyrses 5–9 cm long, axillary or in axils of cicatrices, subracemose bearing fascicles of subsessile flowers; bracteoles minute or 0. Calyx cupuli-form, c. 2–3 mm diam., puberulous outside; margin 4-toothed. Petals 4, oblong, c. 7–10 mm long, cream to yellowish, free of staminal tube. Staminal tube cylindrical, glabrous or very sparsely pubescent outside; margin crenate; anthers 8. Disc c. 1–2 mm long. Ovary 4-locular; locules 1-or 2-ovulate. Capsule subglobose, c. 2–3 cm long, 2.5–3 cm wide, 4-valved, finely hairy, orange. Seeds 4, ellipsoid, c. 2 cm long, black.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention -
Sexuality dioecy
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 10.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Well developed rain forest on a variety of sites, but tends to be more abundant in drier, more seasonal rain forest; at elevations up to 1,100 metres in northern Australia.
More
Grows in rainforest 0–1160 m alt.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 8-12

Usage

Uses fuel material social use timber 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

Dysoxylum oppositifolium world distribution map, present in Australia, Philippines, and Papua New Guinea

Conservation status

Dysoxylum oppositifolium threat status: Vulnerable

Identifiers

LSID urn:lsid:ipni.org:names:578254-1
WFO ID wfo-0000658732
COL ID 6DQR4
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Dysoxylum palawanense Dysoxylum wenzelii Alliaria oppositifolia Alliaria turczaninowii Dysoxylum ilocanum Dysoxylum capizense Dysoxylum ramosii Dysoxylum turczaninowii Dysoxylum venosum Dysoxylum oppositifolium