Spirostachys africana Sond.

Species

Angiosperms > Malpighiales > Euphorbiaceae > Spirostachys

Characteristics

A dioecious or monoecious several-stemmed, much-branched deciduous shrub or tree with a rounded crown (2.5–)4–9(–14) m. high, often with drooping stems and with milky latex.. Bark light brown to dark grey, ± smooth, finely reticulate or rough and fissured.. Wood brown, fragrant.. Twigs brownish or greyish, lenticellate.. Petioles 4–10(–17) mm. long, adaxially canaliculate, with 2 small hemispheric-subcylindric glands at the apex; leaf-blades elliptic-ovate to ovate-lanceolate, (1.5–)3–7 cm. long, (0.5–)1–3 cm. wide, shortly obtusely acuminate, obtuse or rounded at the apex, rounded-cuneate or rounded at the base, shallowly crenate or crenate-serrate, chartaceous to thinly coriaceous, lateral nerves 9–13 pairs, scarcely prominent above, slightly so beneath, yellowish green above, pale green beneath, later turning red with the nerves remaining green, sticky when young.. Stipules triangular-ovate, 1 mm. long, acute, fimbriate, soon caducous.. Inflorescences usually appearing before the leaves, solitary, very dense, narrowly cylindric at first, 1–2.5 cm. long, bisexual or male only, brown at first; bracts transversely ovate, pouched, 1.5 mm. across, obtuse, minutely denticulate, thickened, densely imbricate, 1-flowered, eglandular; bracteoles 2, rhombic, 1 mm. long, acute.. Male flowers: sepals (2–)3, obovate-suborbicular, 0.8 mm. long, rounded, subentire, concave; staminal column 1 mm. high, anthers 0.75 mm. long.. Female flowers: pedicels 0.5 mm. long, extending to 5–8 mm. long in fruit; sepals 5, triangular-ovate, 1 mm. long, acute, subentire, flat; ovary trilobate, 1 mm. diameter, smooth; styles 3, 1.5 mm. long, stigmas red.. Fruit trilobate, 7 mm. long, 1.2 cm. diameter, smooth, green at first, later yellow-brown. Columella 4 mm. long.. Seeds broadly ovoid-subglobose, 4 mm. long, 3 mm. across, smooth, pale yellowish brown or light brown, streaked with reddish brown or dark brown.
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A shrub or tree. It loses its leaves during the year. It can grow 10-20 m high. The bark is grey and rough and cracks into squares. The leaves are small and narrowly oval. They have rounded teeth along the edge. The leaves turn red before falling. The leaf stalks have 2 small glands towards the end near the leaf. The flowers are in long groups and appear before the leaves. Male and female flowers are separate on the same tree. The fruit is a small capsule with 3 lobes. They split open into 3 segments suddenly and noisily. The seeds are round with a papery covering.
Leaf blades 2–7 × 1–3.5 cm, elliptic-ovate, obtusely acuminate or obtuse at the apex, rounded at the base, shallowly crenate, chartaceous to thinly coriaceous, green on upper surface, paler beneath, often becoming bright red or plum-coloured before falling; lateral nerves in 6–14 pairs.
Female flowers: pedicels very short at first, but extending to 10 mm long in fruit; sepals 5, 1 mm long, triangular-ovate, acute, flat; ovary 1 mm in diameter, 3-lobed, smooth; styles 3, 1.5 mm long, stigmas red.
Inflorescences often appearing before the leaves, up to 4 cm long, narrowly cylindric, dense flowered, brownish; bracts spirally arranged, 1.5 mm across, transversely ovate, eglandular.
Tree, up to 10 m high. Leaves ovate to elliptic, 25-70 x 18-35 mm, with 2 glands at junction with petiole. Inflorescences slender catkin spikes. Flowers brown.
Male flowers: sepals (2)3, minute, obovate-suborbicular, concave, brownish-green; staminal column 1 mm high, anthers 0.75 mm long.
A deciduous tree usually 12 m tall, sometimes up to 16 m in height, with a copious caustic milky latex, dioecious or monoecious.
Petioles 2–10 mm long, adaxially canaliculate, with 2 small hemispherical glands at the apex.
Seeds 4 × 3 mm, broadly ovoid-subglobose, smooth, light brown streaked with darker brown.
Fruit 5–7 × 12–13 mm, 3-lobed, smooth, green at first, becoming yellowish-brown.
Bark dark greyish-brown and rough on the bole, smoother and lighter above.
Young twigs brownish, older ones greyish.
Stipules minute, fimbriate, soon falling.
Wood hard, dark, smelling of sandalwood.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention deciduous
Sexuality
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 7.5 - 9.5
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Deciduous woodland, bushland; wooded grassland; Colophospermum mopane or mixed woodlands; sometimes in thickets; locally common and usually gregarious; the largest trees occur near streams and seasonal watercourse; elevations from 30-1,350 metres.
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It is a subtropical plant. It can grow in poor and salty soils. It grows between 60-1,370 m above sea level. It can grow in arid places.
Light 7-9
Soil humidity 1-6
Soil texture 1-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) 10-12

Usage

Caution: The whole plant is poisonous. The resin is recorded as being eaten. It causes diarrhoea and is better not eaten.
Uses animal food environmental use food material medicinal non-vertebrate poison oil ornamental poison social use vertebrate poison 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 -

Images

Spirostachys africana unspecified picture

Distribution

Spirostachys africana world distribution map, present in Angola, Botswana, Kenya, Mozambique, Namibia, eSwatini, Tanzania, United Republic of, South Africa, and Zimbabwe

Conservation status

Spirostachys africana threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:356435-1
WFO ID wfo-0000313535
COL ID 4Z8MS
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Sapium africanum Spirostachys africana Spirostachys synandra Stillingia africana Excoecariopsis synandra Excoecaria africana Excoecaria synandra