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Acacia Ataxacantha
''Senegalia ataxacantha'', commonly known as the flame thorn, is an African tree species with conspicuous red pods and numerous hooked prickles. Range It is widespread in sub-Saharan Africa from Senegal in the west to Sudan in the east, Namibia, Botswana, Zimbabwe, and in the Transvaal and KwaZulu-Natal. In arid regions it prefers low-lying sites near streams, watercourses and in valleys, but in higher rainfall areas is a common constituent of the bush, often favouring forest margins. Once established, young trees are quite frost-hardy. Description Its normal habit is that of a multi-stemmed, untidy, large shrub with a tendency for the shoots to scramble using their recurved prickles, and often develops into a single-stemmed tree of 5-10m in height and 300mm trunk diameter. The rounded crown of dense, dark green foliage is composed of very small pinnules. Translucent red pods provide a colourful display when backlit. The flaking bark is light grey, splitting longitudinally and tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Augustin Pyramus De Candolle
Augustin Pyramus (or Pyrame) de Candolle (, , ; 4 February 17789 September 1841) was a Swiss botanist. René Louiche Desfontaines launched de Candolle's botanical career by recommending him at a herbarium. Within a couple of years de Candolle had established a new genus, and he went on to document hundreds of plant families and create a new natural plant classification system. Although de Candolle's main focus was botany, he also contributed to related fields such as phytogeography, agronomy, paleontology, medical botany, and economic botany. De Candolle originated the idea of "Nature's war", which influenced Charles Darwin and the principle of natural selection. de Candolle recognized that multiple species may develop similar characteristics that did not appear in a common evolutionary ancestor; a phenomenon now known as convergent evolution. During his work with plants, de Candolle noticed that plant leaf movements follow a near-24-hour cycle in constant light, suggestin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KwaZulu-Natal
KwaZulu-Natal (, also referred to as KZN and known as "the garden province") is a province of South Africa that was created in 1994 when the Zulu bantustan of KwaZulu ("Place of the Zulu" in Zulu) and Natal Province were merged. It is located in the southeast of the country, with a long shoreline on the Indian Ocean and sharing borders with three other provinces and the countries of Mozambique, Eswatini and Lesotho. Its capital is Pietermaritzburg, and its largest city is Durban. It is the second-most populous province in South Africa, with slightly fewer residents than Gauteng. Two areas in KwaZulu-Natal have been declared UNESCO World Heritage Sites: the iSimangaliso Wetland Park and the uKhahlamba Drakensberg Park. These areas are extremely scenic as well as important to the surrounding ecosystems. During the 1830s and early 1840s, the northern part of what is now KwaZulu-Natal was established as the Zulu Kingdom while the southern part was, briefly, the Boer Natalia Repu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Southern African Indigenous Trees And Woody Lianes
This is a list of Southern African trees, shrubs, suffrutices, geoxyles and lianes, and is intended to cover Angola, Botswana, Lesotho, Malawi, Mozambique, Namibia, South Africa, Swaziland, Zambia and Zimbabwe. The notion of 'indigenous' is of necessity a blurred concept, and is clearly a function of both time and political boundaries. The global distribution of plants useful to humans, or inadvertently transported by them, is closely linked to a mapping of their journeys and settlements, and the movement of species in prehistoric times must be inferred from archaeological and palaeontological remains, centers of diversity, DNA and other sources. Cyatheaceae * ''Cyathea capensis'' (L.f.) J.E. Sm. (''Hemitelia capensis'' Kaulf.) * ''Cyathea dregei'' Kunze (''Alsophila dregei'' (Kunze) R.M. Tryon) * '' Cyathea manniana'' Hook. * ''Alsophila thomsonii'' (Baker) R.M. Tryon (''Cyathea thomsonii'' Baker) Blechnaceae * '' Lomariocycas tabularis'' (Thunb.) Kuhn Cycadaceae * '' Cycas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Senegalia Caffra
''Senegalia caffra'', also known as hook-thorn or ''Acacia caffra'', is a tree that occurs commonly in southern Africa. Though it is cultivated, it often occurs naturally in Gauteng suburban gardens, together with '' Acacia karroo'' and ''Acacia robusta''. It is up to tall and may be found in open woodland, grassland, rocky hillsides or watercourses. Description It has extremely hard, dense and attractive timber, and is only spared from intense exploitation because of its strongly twisted trunk which does not lend itself to long planks, and its tendency to develop heart rot. The bark is rough, dark grey and flaking, while the strong, paired hooked thorns are a formidable deterrent on young plants. Twigs which may vary in hairiness from densely puberulous to pubescent or tomentose. Due to its variability the species has been described under many names, some being listed below. ''Senegalia caffra'' is deciduous and older plants are resistant to frost, fire and drought. Its appe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heart Rot
300px, The bracket fungus '' Fistulina hepatica'' is one of many that cause heart rot. In trees, heart rot is a fungal disease that causes the decay of wood at the center of the trunk and branches. Fungi enter the tree through wounds in the bark and decay the heartwood. The diseased heartwood softens, making trees structurally weaker and prone to breakage. Heart rot is a major factor in the economics of logging and the natural growth dynamic of many older forests. Heart rot is prevalent throughout the world affecting all hardwood trees and can be very difficult to prevent. A good indication of heart rot is the presence of mushrooms or fungus conks on the tree. Biological cause Heart rot is caused by fungi entering the trunk of the tree through wounds in the bark. These wounds are areas of the tree where bare wood is exposed and usually, a result of improper pruning, fire damage, dead branches, insects, or even animal damage. The fungal spores enter the exposed wounds, germinate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acacia Melanoxylon
''Acacia melanoxylon'', commonly known as the Australian blackwood, is an ''Acacia'' species native in South eastern Australia. The species is also known as Blackwood, hickory, mudgerabah, Tasmanian blackwood, or blackwood acacia. The tree belongs to the ''Plurinerves'' section of ''Acacia'' and is one of the most wide-ranging tree species in eastern Australia and is quite variable mostly in the size and shape of the phyllodes. Description The tree is able to grow to a height of around and has a bole that is approximately in diameter. It has deeply fissured, dark-grey to black coloured bark that appears quite scaly on older trees. It has angular and ribbed branches The bark on older trunks is dark greyish-black in colour, deeply fissured and somewhat scaly. Younger branches are glabrous, ribbed and angular to flattened near the greenish coloured tips. The stems of younger plants are occasionally hairy. Like most species of ''Acacia'' it has phyllodes rather than true leaves ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barbara Jeppe
Barbara Jeppe (21 May 1921 Pilgrim's Rest, Mpumalanga, Pilgrim's Rest – 20 June 1999 Johannesburg) was a South African botanical illustrator, botanical artist. Born in the mining town of Pilgrim's Rest, Mpumalanga, Pilgrim's Rest, she was the daughter of Victor Brereton, a land-surveyor, and Gladys Evans. At an early age her mother introduced her to the world of wild flowers. She was married to Carl Louis Jeppe, a psychiatrist. The couple had four children, Leigh, Marie, Carl and David. Twenty years into her marriage, she illustrated her first book, ''Trees and Shrubs of the Witwatersrand'' (Witwatersrand University Press) with which she made her mark in the field of botanical art. Over a period of three years she spent a year in the Cape, illustrating and writing the text for her book on Cape bulbs. This passion for bulbs resulted in the publication of the ''Spring and Winter Flowering Bulbs of the Western Cape'' (Oxford University Press, 1989). Her definitive work on ''Ama ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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