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Eastern Cape Resin Tree
Ozoroa mucronata
SA tree no: 373
English: Eastern Cape Resin Tree, Kei Resin Tree, Spoonbush
Afrikaans: Kei-harpuisboom, Oos-kaapse Harpuisboom, Harpuisboom
Xhosa: Umphemba
Zulu: Umhlazane
Synonyms, misapplied or old scientific names: Anaphrenium mucronatum, Heeria mucronata, Ficus natalensis, Ozoroa reticulata
Ozoroa mucronata is an indigenous evergreen shrub or small tree that is a tough survivor found in the fynbos and rocky areas of the Western and Eastern Cape. It has a slightly twisted trunk and branches, its leaves a glossy dark green that look almost varnished. When it flowers, it produces masses of tiny, creamy-white blossoms that create a lovely, soft display, followed by tiny, glossy reddish-brown fruits that are a treat for birds.
The real magic lies within its bark, which oozes a fragrant resin when injured. This resin has been used for centuries, giving the tree its common name and hinting at its traditional importance. It's a tough survivor, often found in coastal thickets, adding character to the landscape.
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Distinguishing features:
Leaves are simple, alternate, and glossy dark green, often with a distinct drip-tip (mucronate apex).
Young leaves and stems are often reddish.
Flowers are small, creamy-white, and produced in dense clusters (panicles) at the ends of branches.
Bark is dark grey to blackish and exudes a fragrant, sticky resin when damaged.
Fruit is a small, kidney-shaped drupe that turns reddish-brown when ripe.
Overall appearance:
A small to medium-sized evergreen tree, often with a somewhat gnarled or twisted appearance, or sometimes a shrub.
Height:
Typically grows between 1 and 3 metres tall, but can sometimes reach up to 8 metres in favourable conditions.
Width:
The crown can spread to 3 to 6 metres in diameter.
Leaves:
Arranged alternately along the stems.
Simple (undivided) and leathery.
Shape is broadly elliptic to obovate (wider at the top and tapering towards the base).
Measure between 4 to 10 cm long and 2 to 5 cm wide.
The upper surface is glossy, dark green and hairless.
The lower surface is distinctly paler.
The apex (tip) usually ends in a distinct, sharp point (a mucro), which is where the name 'mucronata' comes from.
The midrib and other veins are prominent on both surfaces of the leaf.
Young leaves often have a reddish tint.
Flowers:
The flowers are small, creamy-white, and fragrant.
They are produced in large, dense, branched clusters (terminal panicles) at the ends of the branches, creating a showy display when in full bloom.
The flowers are usually unisexual (the species can be dioecious, with male and female flowers on separate trees, or monoecious, with both types on the same tree, though dioecious is more common).
Flowering season:
Flowers mainly from spring to early summer (September to December).
Fruits:
The fruit is a small, kidney-shaped drupe, about 0.8 to 1 cm long.
It is initially green, turning reddish-brown to black when ripe.
Produced in dense clusters after flowering.
Seeds:
Each fleshy drupe contains a single hard seed.
Bark:
The bark is dark grey to blackish, often rough and fissured, especially on older trees. It is notable for exuding a fragrant, sticky resin when cut or damaged. This resin hardens on contact with air.
Wood:
The wood is reddish-brown, hard, and heavy. It is not widely used commercially.
Soil type:
Adaptable to a range of soils, including sandy and clay soils, but prefers well-drained conditions. It can tolerate coastal conditions and slightly saline soils.
Aspect:
Prefers full sun but can tolerate partial shade.
Edibility:
No widely documented edible parts for human consumption, but some sources say the fruits are considered edible and have a sweet-sour taste (other sources say the fruit may be toxic!)
Toxicity:
The resin can be an irritant to the skin for some people, causing dermatitis. Best to consider the fruit not edible and toxic without expert opinion.
Uses:
The fragrant resin has been traditionally used by local people for various purposes, including as an adhesive, waterproofing agent, and in traditional medicine.
The wood is sometimes used for small implements.
It is also grown as an ornamental tree in gardens, particularly in coastal areas.
Ecology:
Pollination: The small, greenish-yellow flowers attract various insects, including bees and flies, which aid in pollination.
Seed Dispersal: The ripe, glossy fruits are consumed by birds, which then disperse the seeds, helping the plant to spread.
Herbivory: The leaves are known to be browsed by game animals in its natural habitat.
Distribution and habitat:
Endemic to the Eastern Cape, from Addo Elephant Park to Bathurst District.
It is common in coastal bush, dune vegetation, and dry woodland, often near the coast.
Derivation of name:
The genus name Ozoroa is derived from the Greek words 'ozo' meaning 'to smell' and 'rhoe' meaning 'flow,' referring to the fragrant resin that flows from the bark.
The species name mucronata refers to the mucronate (sharply pointed) apex of the leaves.
The common name "Eastern Cape Resin Tree" highlights its resinous nature and one of its main distribution areas in South Africa.
Interesting facts:
That resin isn't just sticky; it smells really nice!
Imagine using that resin as glue – a natural superglue from a tree!
It's a tough tree that can handle the salty air near the coast.
Those glossy leaves almost look fake, they're so shiny.
Keep an eye out for those tiny, fragrant flowers – they might be small, but there are loads of them!
Growing tips:
Propagation: While specific propagation details for Ozoroa mucronata are not widely available, most Ozoroa species can be propagated from fresh seeds or cuttings. Seeds: Sow fresh seeds in a well-drained, sandy mix. Germination can sometimes be slow and erratic. Cuttings: Semi-hardwood cuttings taken in summer with rooting hormone can be attempted.
Planting: Prefers a sunny spot with well-drained, sandy, or rocky soil. Ideal for fynbos or low-maintenance gardens.
Watering: Once established, it is very drought tolerant and requires minimal watering. Water young plants regularly to help them establish strong roots.
Frost: Moderately frost hardy. In areas with severe frost, young plants might benefit from some protection.
Maintenance: Generally a low-maintenance shrub. Pruning can be done to shape the plant or maintain its size.
Pests/Diseases: Known to be quite hardy and not typically troubled by many pests or diseases.
This plant is a fantastic alternative for:
Rooikrans
Acacia cyclops
Plant type:
Evergreen, tree or shrub
Plant family:
Anacardiaceae (Greek plant name) - Order: Sapindales