Acokanthera oppositifolia (Lam.) Codd

Species

Angiosperms > Gentianales > Apocynaceae > Acokanthera

Characteristics

Shrub or small tree 2-4 m high, evergreen; branches more or less erect, sparingly branched, glabrous or, rarely, puberulous. Leaves very coriaceous, dark green and glossy above, glabrous or minutely papillose, paler and sometimes purplish beneath, ovate-elliptic to oblong or oblong-lanceolate, 5-10 cm long and 2-5 cm broad, cuneate or obtuse at the base, apex acute, rarely obtuse to rounded, mucronate; secondary nerves 5-10 on each side, usually distinct; margin revolute; petiole stout, transversely wrinkled, channelled above, 2-5 mm long. Inflorescence many-flowered, subsessile, contracted and corymbose or a short, dense raceme of cymes; bracts ovate, 1-5 mm long, caducous. Flowers sessile, white tinged with pink, scented. Calyx small, 2 mm long, puberulous or glabrous; sepals ovate-lanceolate, acute, often ciliate. Corolla salver-shaped; tube cylindric, wider near the apex and slightly contracted at the throat, 8-11 mm long, pubescent to subglabrous without, hairy within, lobes broadly ovate, abruptly acute, 2-2.5 mm long, pubescent. Stamens 5, situated in the throat, sub-sessile; anthers ovate, 1 mm long, apex almost glabrous. Ovary entire, 2-chambered, with one ovule in each locule; style filiform, 6-8 mm long; stigma small, conical with a minutely bifid hairy tip. Fruit an ellipsoid or subglobose berry, either small, 8-12 mm long and 6-8 mm in diameter, or large, 1.4-2 cm long and 1-1.5 cm in diameter, purplish black. Seeds 2 or 1 (by abortion), broadly elliptic in outline, flattened on one side, 6 mm long (in small fruits) or up to 1-2 cm long in large fruits.
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Shrub or small tree 1–7 m high; bark brown, deeply fissured; slash cream turning olive green.. Leaves petiolate; petiole 2–7 mm long; blade elliptic or obovate, 4–13.5 cm long, 1.5–8.4 cm wide, acute, obtuse or rounded at the apex, with a hard spiny mucro, cuneate or rounded at the base, coriaceous, glabrous, sometimes puberulous on young leaves especially beneath on lower nerves; secondary veins prominent.. Inflorescence of dense cymes; bracts ovate, 1.3 mm long, acute at the apex, ciliate; sepals ovate, 2.4–3.5 mm long, 0.9–1.6 mm wide, acuminate to acute at the apex, dorsally pubescent or glabrous, ciliate.. Corolla tube pink or red, 12–19 mm long, pubescent or hispid on external surface, rarely glabrous, pilose in the upper half and wrinkled below inside; lobes broadly elliptic, 3.2–4 mm long, 2.5–4 mm wide, acute at the apex, pubescent at the base and mouth of tube, ciliate; stamens slightly exserted, inserted at 12.5–15 mm from the base; anthers ovate up to 1.3 mm long; pistil 13–18 mm long; style 11–16 mm long.. Fruit purple, ellipsoid, 12–35 mm long, ± 25 mm in diameter; seeds 6.6–10 mm long.. Fig. 5/1–4 (p. 16).
Small, perennial tree or shrub, (0.6-)2.0-4.0(-6.0) m high; sometimes multi-stemmed. Leaves ovate-elliptic, oblong to oblanceolate, 50-100 x 20-50 mm, lateral veins distinct, apex acute, ending in a sharp, callose, mucronate point; new leaves red. Inflorescences clustered and many-flowered. Flowers salver-shaped, white. Corolla: tube 8-11 mm long; lobes 2-3 mm long. Anther: apices glabrous. Gynoecium syncarpous. Style 6-8 mm long. Flowering time (Apr.-)June-Oct. (Dec). Fruit an ovoid to ellipsoid, fleshy berry, (8-)10-12(-20) mm long, 10-15 mm in diam., red to purple when mature.
Shrubs to 5 m tall. Branchlets compressed when young, terete with age. Petiole 2-6 mm; leaf blade mostly obovate, occasionally elliptic, 4-10 X 2-7 cm, lateral veins 6-10 pairs. Inflorescences sessile or subsessile, clustered, glabrous or puberulent, usually many flowered; bracts brown or distal ones pinkish, ovate. Sepals ovate to very narrowly ovate. Corolla white to pink, tube 0.8-1.3 cm, glabrous or puberulent outside, hairy inside; lobes broadly ovate, 2-4.5 mm. Berry purplish black, globose, 2.5-3 cm in diam. Seeds semiglobose or semi-ellipsoid, 0.8-1.2 cm. 2n = 22.
Leaves coriaceous, glabrous, smooth or occasionally slightly scabrid; petiole 2–6(7) mm. long; lamina 4·6–10·6 x 1·8–6·7 cm., usually obovate, occasionally elliptic, the apex acute, cuspidate or obtuse, with hard mucro, the base cuneate or rounded; upper surface glossy, with midrib impressed and lateral nerves strongly raised; lower surface mat, all nerves raised, the proximal lateral nerves characteristically reaching the margin without looping to join neighbouring nerves; midrib of lower surface and petiole wrinkled.
A bush or small tree. It grows 8 m tall. The leaves are 5-10 cm long by 2-5 cm wide. They are thick and leathery. They have a sharp spine like point. They are crowded in rings along the stem. The flowers are white or pink. They do not have stalks and are in dense clusters in the axils of leaves. The fruit are a plum shaped berry 1.4-2 cm long. They are bright red but purplish-black when ripe.
Corolla tube 9–13·5 mm. long, pubescent or hispid on external surface or rarely glabrous, pilose within above the middle and wrinkled below; lobes ovate-cuspidate, 2–4·6 mm. long, pubescent or glabrous on either side, usually ciliate.
Small tree or shrub, 2-4 m high. Leaves ovate-elliptic to oblong or lanceolate, acute or obtuse, secondary and often tertiary nerves distinct. Fruit ovoid, rarely subglobose. Flowers white, tinged with pink.
Inflorescences very plentiful, dense, contracted, many-flowered axillary cymes; flowers fragrant, with pink or reddish corolla tube and white lobes.
A much-branched evergreen shrub, sometimes scrambling, or small tree, 1–6 m. high; bark brown, deeply fissured; slash cream turning olive green.
Shrub or tree to 4 m; sap milky. Leaves leathery, ovate, glossy, margins revolute. Flowers in axillary clusters, white tinged pink, fragrant.
Calyx 2–3 mm. long, lobes ovate to lanceolate, weakly imbricate, dorsally pilose and ciliate or glabrous.
Fruit an ellipsoid berry 12–20 mm. long (dry), purple when ripe; seeds 6·5–10 mm. long.
Anthers 1·1–1·4 mm. long, visible in the mouth of the corolla tube at anthesis.
Young branches with reddish tinge, glabrous, conspicuously angled and ribbed.
Ovary 0·6–1 mm. long, ellipsoid, smooth.
Life form perennial
Growth form shrub
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 3.0 - 5.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

A tropical plant. It grows on high hill-slopes and dry plateaux from East Africa to South Africa. It grows up to 2,400 m above sea level. It can grow in arid places. It grows in area with a rainfall between 600-1,000 mm. In Tanzania it grows between 1,500-2,100 m above sea level and can be on termite mounds. It grows in Miombo woodland in Africa. It suits hardiness zones 9-11.
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Found in a variety of habitats: rocky hillsides, coastal bush, open woodland, termite mounds, dry forest and forest margins, riverine forest or woodland, at elevations from 1,500-2,100 metres.
Light -
Soil humidity 10-12
Soil texture 7-8
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-11

Usage

CAUTION: This fruit is poisonous when unripe. It contains alkaloids that can affect the heart. Although used for jams it is probably not wise. The fruit should only be used when very ripe. The latex from the fruit is used by children as chewing gum.
Uses environmental use food gene source gum material medicinal poison vertebrate poison
Edible barks fruits leaves roots seeds
Therapeutic use Poison (unspecified), Cardiac (unspecified), Poison(Arrow) (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

It can be grown from seeds or semi-ripe cuttings.
Mode cuttings seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Flower

Acokanthera oppositifolia flower picture by Vincent Muhoro (cc-by-sa)

Distribution

Acokanthera oppositifolia world distribution map, present in Botswana, China, Kenya, Mozambique, Malawi, eSwatini, Tanzania, United Republic of, South Africa, Zambia, and Zimbabwe

Conservation status

Acokanthera oppositifolia threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:76349-1
WFO ID wfo-0000336130
COL ID 9FRK
BDTFX ID 167594
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Pleiocarpa hockii Toxicophlaea thunbergii Acokanthera longiflora Acokanthera rhodesica Acokanthera venenata Acokanthera oppositifolia Garcinia sciura Carissa longiflora Carissa acokanthera Carissa oppositifolia Acokanthera lamarkii Toxicophlaea cestroides