Carissa macrocarpa

(Ecklon) A. de Candolle in A. P. de Candolle and A. L. P. P. de Candolle

Prodr. 8: 336. 1844.

Common names: Natal plum
IntroducedIllustrated
Basionym: Arduina macrocarpa Ecklon S. African Quart. J. 1: 372. 1830
Treatment appears in FNA Volume 14.

Shrubs 1–2(–6) m. Stems: spines stout, bifurcated. Leaves: peti­ole 1–6 mm, glabrous; blade ovate, elliptic, oblong, or orbic­ulate, 1.3–7.2 × 0.9–5.3 cm, cor­iaceous, base cordate to cune­ate, margins revolute, apex acute or mucro­nate, glabrous. Peduncles 3–4 mm, glabrous. Pedicels 3–4 mm, glabrous. Flowers: calyx lobes ovate to narrowly oblong, auriculate, 2–4.5(–7) mm, glabrous, colleters present or absent; corolla glabrous abaxially, eglandular-pubescent adaxially, tube 5–10 × 1.5–2 mm, throat 5–12 × 2.5–3 mm, lobes spreading, obliquely obovate, (4.5–)10–24 × 4–7 mm. Berries 2.7–6 × 2–3 cm. Seeds 4–6 × 3–4.5 mm. 2n = 22.


Phenology: Flowering spring–fall; fruiting summer–fall.
Habitat: Coastal hammocks, beach dunes, disturbed areas.
Elevation: 0–10 m.

Distribution

Introduced; Fla., Tex., e, se Africa

Discussion

The stout, dichotomously branched spines readily distinguish Carissa macrocarpa from all other North American members of Apocynaceae. Plants are widely cultivated as ornamentals and for hedges in warmer parts of the United States and have become naturalized in a few coastal counties in Florida and Texas. The flesh of the fruit is edible when fully ripe, but unripe fruits, seeds, and all vegetative parts of the plant are toxic.

Selected References

None.

Lower Taxa

None.
... more about "Carissa macrocarpa"
David E. Lemke +
(Ecklon) A. de Candolle in A. P. de Candolle and A. L. P. P. de Candolle +
Arduina macrocarpa +
Natal plum +
Fla. +, Tex. +, e +  and se Africa +
0–10 m. +
Coastal hammocks, beach dunes, disturbed areas. +
Flowering spring–fall +  and fruiting summer–fall. +
Introduced +  and Illustrated +
Carissa macrocarpa +
species +