Acokanthera rotundata (Codd) Kupicha

Round-leaved poison-bush (en)

Species

Angiosperms > Gentianales > Apocynaceae > Acokanthera

Characteristics

Leaves very coriaceous, often drying somewhat concave, slightly to strongly papillose-scabrid, especially above; petiole 3–7 mm. long, pubescent on upper surface; lamina 3·8–7·5 x 2·5–4·8 cm., broadly elliptic to subcircular, the apex obtuse with blunt or sharp mucro, the base rounded; upper surface glossy, with midrib level and lateral veins faintly raised or impressed, glabrous except for a line of hairs sometimes continuing from the petiole along the midrib; lower surface mat, midrib raised, laterals faintly so; lateral veins looped to join their neighbours.
More
A shrub or small tree. It can grow 5 m high. The bark is rough and grey to brown. The branches are angled. The plant has milky sap. The leaves are opposite and broadly oval. They are 8 cm long. They are shiny and dark green above and more pale underneath. They are stiff, rough on top and leathery. The flowers occur as many together in clusters in the axils of leaves. They have a sweet scent.
Corolla tube 9–12 mm. long, glabrous to minutely pubescent on external surface, long-pilose above and wrinkled below, on inner surface; corolla lobes subcircular with apex rounded or cuspidate, 3–5·5 mm. long, ciliate or not, pubescent or glabrous.
Small tree or shrub, up to 3 m high. Leaves broadly elliptic to subrotund, often strongly scabrid, obtuse to rounded at apex, secondary nerves rather indistinct. Fruit globose or subglobose. Flowers white or white tinged with pink.
Inflorescences dense contracted many-flowered axillary cymes; flowers sweet-smelling, with pink or red corolla tube and white lobes.
Stamens inserted at the top of the corolla tube so that the anther tips are just visible at anthesis; anthers 1–1·3 mm. long.
Calyx 2–2·5 mm. long, lobes ovate-acute with often slightly recurved tip, strongly imbricate, dorsally pubescent and ciliate.
Shrub or small much-branched tree up to 5 m. high and 5 m. in diameter, with rough bark.
Young branches pubescent or less often glabrous, conspicuously angled and ribbed.
Ripe fruit up to 2 cm. in diameter, subglobose, red to purple, 1–2-seeded.
Ovary 0·6–0·7 mm. long, conical.
Seeds up to 1 cm. long.
Life form perennial
Growth form
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 5.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
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Nitrogen fixer -
Photosynthetic pathway -

Environment

It is a subtropical plant. It grows on cliffs and among rocks in open grassland.
Light -
Soil humidity 1-3
Soil texture 5-8
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

Caution: The fruit are poisonous. They are bitter but eaten when ripe.
Uses poison
Edible fruits
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
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Optimum temperature (C°) -
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Vigor -
Productivity -

Images

Acokanthera rotundata unspecified picture

Distribution

Acokanthera rotundata world distribution map, present in eSwatini, South Africa, and Zimbabwe

Conservation status

Acokanthera rotundata threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:909903-1
WFO ID wfo-0000336536
COL ID 9FRN
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Acokanthera schimperi var. rotundata Acokanthera rotundata