Author: David Becking

Oncoba spinosa

General Info Tree to 8m high, 0,6m wide. Bark – brownish and smooth. Thin, ovate to elliptic Leaves are simple. Stipules fall early. White Flowers with 3-4 sepals + 13 whorled petals. Globose Fruit 6cm wide + hard woody shell. Description Oncoba spinosa. RSA Tree No. 492. Common names: Snuff-box Tree, Fried-egg-flower. Family: Salicaceae: (Willow family) has recently been expanded and includes 55 genera and 1 000+ species. Trees may be deciduous or evergreen. Leaves are simple and they and the bark often contain Salicin (a bitter alcoholic glucoside related to aspirin). This glucoside can be used as an anti–inflammatory. However, it may cause a skin allergy). Flowers are genetically hermaphroditic, in catkins and usually lacking a normal perianth (a collective term for the calyx and corolla). A bract subtends each flower. There are 2-many Stamens. The superior Ovary has 2-4 carpels. The flowers are wind pollinated. Fruit is variable with many small wind dispersed seeds. Local genera include Dovyalis, Oncoba, Salix and Scolopia. Name derivation: Oncoba – from the Arabic name for the North African species. spinosa – spiny. O. spinosa is the only species of this genus in southern Africa. Conservation Status: L C. (Least Concern). 2009 (Raimondo et al.). Tree The Tree is about 6m high but may reach 8m. The trunk up to 0,6m wide. It can also be a shrub. Branches have conspicuous raised Lenticels (a usually raised...

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Leucadendron argenteum

General Info Tree usually up to 5m has a grey Bark. Simple Leaves have a hairy, glistening sheen. The dioecious flowers are in a compound inflorescence. Fruit is a heavy, woody cone with small, black nuts. Description Leucadendron argenteum, Protea argentea. Common names: Cape Silver Tree, Silwerboom, Silver Tree, Witteboom, Silver leaf tree. Family: Proteaceae (Protea family). Name derivation: Protea – after the Greek sea god Proteus, who like the plants, had a variable appearance. Members of this family occur mainly in the southern hemisphere. Universal characteristics are few. All are woody trees or shrubs. Anthers are basifixed and...

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Euphorbia ingens

General Info Tree is up to 10m+ high. All Leaves deciduous & fall very early. Flowers on wing ridges in cyanthia. They have 1 stamen or 1 pistil. Fruit is a small globose, woody capsule. Description Euphorbia ingens, Euphorbia cooperi, Euphorbia Natalensis, Euphorbia similis. RSA Tree No. 351. Common names: Cactus Euphorbia, Candelabra Euphorbia, Candelabra Tree, Common Euphorbia, Tree Euphorbia, Lebombo-naboom, Naboom Euphorbia. Family: Euphorbiaceae (Euphorbia family e.g. exotic poinsettia – Euphorbia pulcherrima). This family has about 275 genera and 7 500 species. Our local genera containing trees include Alchornea, Croton, Euphorbia, Macaranga and Spirostachys. This family has plants that may be herbs, shrubs or trees...

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Erythrina caffra

General Info Deciduous Tree to 20m and branchlets have prickles. The Leaves trifoliate. Reddish Flowers are bisexual and zygomorphic. Fruit is a pod, constricted between orange to red Seeds. Description Tree Erythrina caffra, Erythrina constantiana, Erythrina fissa. RSA Tree No. 242. Common names: Coastal Coral-tree; Coral tree; Cape Coral-tree. Family: Fabaceae or Leguminosae are Angiosperms (flowering plants) and commonly referred to as the pea, bean or legume family. After the Orchidaceae and the Asteraceae, the Fabaceae is the third largest Angiosperm family with 700+ genera and close to 20 000 species. Local genera include: Acacia (Vauchellia, Senegalia), Albizia, Bauhinia, Bolusanthus, Burkea, Colophospermum, Cyclopia, Erythrina,...

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Commiphora mollis

General Info The Tree is up to 8m high.  Bark has resin ducts; underbark green. Imparipinnate Leaves have 2-6 pair of opposite leaflets + terminal one.  Regular small Flowers are 4-merous.  Fruit a drupe with 1 black Seed. Description Commiphora mollis, Commiphora welwitschii, Commiphora cinereal, Commiphora boehmii, Commiphora dekindtiana, Commiphora iringensis, Commiphora krausei, Commiphora montana, Commiphora ndemfi, Commiphora stuhlmannii, Balsamodendron molle. RSA Tree No. 280. Common names: Velvet Corkwood, Velvet-leaved Corkwood, Soft leaved Commiphora, Velvet Commiphora. Family: Burseraceae (The torchwood family, which include frankincense from Boswellia sacra, myrrh from Commiphora myrrha both of which have an incense like odour).  Non-allergenic...

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