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Ribbed Kuni-bush
Searsia pallens
SA tree no: 395
English: Ribbed Kuni-bush, Ribbed Kunirhus, Pale Kuni-bush, Grey Kuni-bush
Afrikaans: Bleekkoeniebos
Synonyms, misapplied or old scientific names: Rhus excisa var. emarginata, Rhus pallens, Rhus plicaefolia
Searsia pallens, or Ribbed Kuni-bush, is a hardy, unassuming shrub that adds a touch of subtle beauty to the arid landscapes it calls home. With its greyish-green, textured leaves and small, discreet flowers, it's a survivor, perfectly adapted to the dry conditions of its native regions. It's a testament to the resilience of plants in the face of harsh environments.
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Distinguishing features:
Greyish-green, compound leaves with distinctive ribbed leaflets.
Small, greenish-yellow flowers in dense clusters.
Small, reddish-brown fruits.
A shrub with a rigid, branched structure.
Overall appearance:
A rigid, much-branched shrub.
Height:
Typically 1 to 2 metres.
Width:
Can spread to about 1 to 1.5 metres.
Leaves:
Compound, with 3 to 5 leaflets, each leaflet is greyish-green, with distinct ribbing on the underside, and are typically 1 to 3 cm long.
Flowers:
Small, greenish-yellow, in dense, terminal or axillary panicles (branched flower clusters). Dioecious (separate male and female plants).
Flowering season:
Spring to summer (September to February in South Africa).
Fruits:
Small, rounded, reddish-brown drupes (fleshy fruits with a single seed), about 5 to 7 mm in diameter.
Seeds:
Small, contained within the drupe.
Bark:
Greyish-brown, becoming rougher with age.
Thorns:
None.
Wood:
Hard and dense.
Roots:
Deep and extensive root system, adapted to dry conditions.
Soil type:
Well-drained, sandy, or rocky soils.
Aspect:
Prefers full sun.
Distribution and habitat:
It is widespread across eastern and southern South Africa, from southern Mpumalanga through KwaZulu-Natal and the Eastern Cape to near Robertson in the Western Cape. A disjunct population occurs in the Magaliesberg, extending to south-eastern Botswana.
Derivation of name:
"Searsia" honours Paul B. Sears, an American ecologist.
"Pallens" means "pale" or "wan," referring to the pale colour of the leaves.
Growing tips:
Plant in well-drained, sandy, or rocky soil.
Provide full sun exposure.
Water sparingly, as it is adapted to dry conditions.
Prune lightly to maintain shape.
Extremely drought resistant.
Interesting facts:
The ribbed texture of the leaves helps reduce water loss in dry climates.
Its hard wood makes it a useful source of firewood in arid regions.
The plant's deep root system allows it to survive in areas with limited rainfall.
Dioecious nature, meaning male and female flowers are on different plants, is interesting for pollination.
The greyish colouration of the leaves offer great camouflage in its natural enviroment.
This plant is a fantastic alternative for:
Common name
Scientific Name
Plant type:
Plant type
Plant family:
Plant family (derivation)