Author: David Becking

Encephalartos dyerianus

General Info This Tree is up to 4m high and Leaves are pinnately compound and parallel veined. Male and female Cones are dioecious.   Description Tree Encephalartos dyerianus, Encephalartos graniticolus. RSA Tree No. 14.2 Common names: Lillie’s Cycad; Lillie-se-broodboom. Family: Zamiaceae. This is a family of perennial cycads with 8 genera and about 150 species. They are only superficially palm or fern like. The cycad tap Root is soon replaced by lateral roots, which become woody. Cycads have coralloid roots that contain symbiotic cyanobacteria (blue-green algae) that fix atmospheric nitrogen in association with root tissue and produce important amino acids for the plant. Stems are cylindrical and southern African species do not have persistent leaf bases. All are evergreen with pinnately compound Leaves. The leaflets have parallel veins. Unlike other members of the family Zamiaceae, species in the genus Encephalartos have leaflets that lack a central Vein. Stomata are present on the lower surface and may occur above as well. All are dioecious with male and female Cones on separate plants. Female cones disintegrate at maturity releasing the Seeds. All produce poisonous glycosides (cycasins). Name derivation: Encephalartos – within-head-bread: referring to the starchy bread that can be made from the pith of the inner trunk. The African plants in the genus Encephalartos include about 66 species. The African plants in the genus Encephalartos include about 66 species and there are about 30...

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Encephalartos kisambo

General Info This endangered Cycad is up to 3,5m high. Leaves are pinnately compound. Dioecious Cones: Female cones are up to 60 x 16cm. The fleshy Testa (seed coat) is yellow. Description Tree Encephalartos kisambo E. voiensis; RSA Tree No. n/a: Not found in the RSA. Common names: Voi cycad. Ready For WEB. 2019.02.24  Family:  Zamiaceae. This is a family of perennial cycads with 8 genera and about 150 species. They are only superficially palm or fern like. The cycad tap Root is soon replaced by lateral roots, which become woody. Cycads have coralloid roots that contain symbiotic cyanobacteria (blue-green...

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Encephalartos paucidentatus

General Info Protected Cycad may reach 7m high. Compound Leaves with parallel veins are terminal. Dioecious female Cones produce large red Seeds. Description Tree Encephalartos paucidentatus. RSA Tree No. 11. Family: Zamiaceae. This is a family of perennial cycads with 8 genera and about 150 species. They are only superficially palm or fern like. The cycad tap Root is soon replaced by lateral roots, which become woody. Cycads have coralloid roots that contain symbiotic cyanobacteria (blue-green algae) that fix atmospheric nitrogen in association with root tissue and produce important amino acids for the plant. Stems are cylindrical and southern...

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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). 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...

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