Author: David Becking

Oncoba spinosa

General Info The Tree may reach 8m high and 0,6m wide. Bark – reddish brown, to brown and smooth. The thin, ovate to elliptic Leaves are simple. Stipules fall early. Sweetly scented, white Flowers with 3-4 sepals and up to 13 whorled petals. Fruit is globose, up to 6cm wide with a hard woody shell. Description Tree Oncoba spinosa. RSA Tree No. 492. Family: Salicaceae: (the 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 bark often contain Salicin (a bitter alcoholic glucoside related to asprin, found in willow bark and leaves of some Salicaceae. It can function as an anti – inflammatory. It may cause a skin allergy). Flowers are genetically hermaphroditic, in catkins and usually lacking a normal perianth. 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. 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 corky oval or elongated area on the plant that allows the interchange of gases with the environment) and are glabrous (hairless). Slender, straight, sharp axillary...

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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 Tree Leucadendron argenteum, Protea argentea. Common names: Cape Silver Tree, Silwerboom, Silver Tree, Witteboom, Silver leaf tree. Family: Proteaceae (Protea family) with about 80 genera and at least 1 600 species. There with 300 species in the RSA. This family has similar to leaves to the fossil Glossopteridales. These fossils were prevalent more than 200 million years ago. This was a time...

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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 Tree Euphorbia ingens, Euphorbia cooperi, Euphorbia Natalensis, Euphorbia similis. Family: Euphorbiaceae (Euphorbia family). This family has about 275 genera and 7 500 species. The genera include Croton, Euphorbia, Alchornea, Macaranga, Spirostachys and poinsettia. This family has plants that may be herbs, shrubs or trees and latex is often present. Leaves, when not rudimentary, are usually alternate and simple with free stipules. Inflorescences are situated terminally or axillary. They are mostly in cymes (a broad, more or less flat-topped, determinate flower cluster, with central flowers opening first). They may be grouped in spikes (simple indeterminate inflorescence with sessile flowers on a single unbranched stalk), thyrses (the main axis grows indeterminately, and the branches have determinate growth) or pseudanthia (inflorescence with many flowers appearing as a single flower – like a sunflower). Plants may be monoecious or dioecious and the regular, unisexual Flowers may or not have a perianth. Male flowers have 1-many stamens with free filaments and stamens with up to 4 pollen sacs. Female flowers have a superior ovary with 1-many locules – each with up to 2 ovules. Fruit is a capsule or nut(s). Seeds may have a caruncle (a fleshy structure attached to the seed)...

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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 and underbark is green. Imparipinnate Leaves have 2-6 pair of opposite leaflets + terminal one. Regular small Flowers are 4-merous. Fruit is a drupe with 1 black Seed. Description Tree 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 (frankincense from Boswellia sacra, myrrh from Commiphora myrrha). Worldwide there are about 16 genera and about 500 species....

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