|
List Of Invasive Species In South Africa
This is a list of invasive species in South Africa, including invasive species of plants, animals, and other organisms in South Africa. A list of invasive species has been published under the National Environmental Management: Biodiversity Act of 2004. Microorganisms Microorganisms considered to be invasive species include: Algae Invasive species of algae include: * ''Codium fragile'' ssp. ''tomentosoides'' – dead man's fingers *''Hypnea musciformis'' – hypnea *''Kappaphycus'' spp. – agar-agars Plants Invasive species of plants include:National List of Invasive Species under Chapter 5 of the National Environmental Management: Biodiversity Act, 2004. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tahr Devils Peak 2004
Tahrs ( , ) or tehrs ( ) are large artiodactyl ungulates related to goats and sheep. There are three species, all native to Asia. Previously thought to be closely related to each other and placed in a single genus, ''Hemitragus'', genetic studies have since proven that they are not so closely related and they are now considered as members of three separate monotypic genera: ''Hemitragus'' is now reserved for the Himalayan tahr, ''Nilgiritragus'' for the Nilgiri tahr, and ''Arabitragus'' for the Arabian tahr. Ranges While the Arabian tahr of Oman and the Nilgiri tahr of South India both have small ranges and are considered endangered, the Himalayan tahr remains relatively widespread in the Himalayas, and has been introduced to the Southern Alps of New Zealand, where it is hunted recreationally. Also, a population exists on Table Mountain in South Africa, descended from a pair of tahrs that escaped from a zoo in 1936, but most of these have been culled. As for the Nilgiri tahr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acacia Saligna
''Acacia saligna'', commonly known by various names including coojong, golden wreath wattle, orange wattle, blue-leafed wattle, Western Australian golden wattle, and, in Africa, Port Jackson willow, is a small tree in the family Fabaceae. Native to Australia, it is widely distributed throughout the south west corner of Western Australia, extending north as far as the Murchison River, and east to Israelite Bay. The Noongar peoples know the tree as Cujong. Description ''Acacia saligna'' grows as a small, dense, spreading tree with a short trunk and a weeping habit. It grows up to eight metres tall. Like many ''Acacia'' species, it has phyllodes rather than true leaves; these can be up to 25 centimetres long. At the base of each phyllode is a nectary gland, which secretes a sugary fluid. This attracts ants, which are believed to reduce the numbers of leaf-eating insects. The yellow flowers appear in late winter and early spring, in groups of up to ten bright yellow spherical fl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azolla Pinnata
''Azolla pinnata'' is a species of fern known by several common names, including mosquitofern, feathered mosquitofern and water velvet. It is native to much of Africa, Asia (Brunei Darussalam, China, India, Japan, Korea, and the Philippines) and parts of Australia. It is an aquatic plant, it is found floating upon the surface of the water. It grows in quiet and slow-moving water bodies because swift currents and waves break up the plant. At maximum growth rate, it can double its biomass in 1.9 days, with most strains attaining such growth within a week under optimal conditions. ''A''. ''pinnata'' is a small fern with a triangular stem measuring up to 2.5 centimeters in length that floats on the water. The stem bears many rounded or angular overlapping leaves each 1 or 2 millimeters long. They are green, blue-green, or dark red in color and coated in tiny hairs, giving them a velvety appearance. The hairs make the top surface of the leaf water-repellent, keeping the plant afloat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austrocylindropuntia Subulata
''Austrocylindropuntia subulata'' is a species of cactus native to the Peruvian Andes. The Latin specific epithet ''subulata'' means "awl-like", referring to the shape of the rudimentary leaves. It is also known by its common names as Eve's pin and Eve's needle. Description ''Austrocylindropuntia subulata'' can reach heights up to , with numerous branches. The elongated, slightly brittle branches are up to long. The stems are marked by rhomboid to ovate bumps in a few spiral rows. At the tip of each bump is the areole, from which grow one to four straight, grayish-white spines up to long. The awl-like rudimentary leaves are up to long. The orangy-pink flowers are up to long. The long, warty hypanthium is covered by rudimentary leaves up to long. The fruit are ovoid or club-like and sometimes thorny. They are up to long. Distribution ''A. subulata'' probably comes from the Peruvian Andes, where it is common at altitudes above . Today it has been naturalised in Argentina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atriplex Nummularia
''Atriplex nummularia'' is a species of saltbush from the family ''Amaranthaceae'' and is a large woody shrub known commonly as oldman saltbush. ''A. nummularia'' is native to Australia and occurs in each of the mainland states, thriving in arid and semi-arid inland regions. Description ''Atriplex nummularia'' is a perennial halophyte species that is extremely hardy, thriving in particularly harsh environments such as saline and alkaline lowlands. ''A. nummularia'' is the largest species of Australian saltbush, typically growing 2–4m wide and up to 3m tall in either a sprawling or erect arrangement. It develops a lattice of woody stems which branch from or close to ground level and utilises a taproot with a subsequent root system that is moderate to deep. It is a deciduous plant, with simple alternate leaves that often have dull teeth and are irregular in shape, varying between circular and triangular. The leaves range between 1–5 cm long and have a silvery-grey coat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atriplex Lindleyi
''Atriplex lindleyi'' is a species of saltbush known by the common name Lindley's saltbush. It is native to Australia, where it is widespread, especially in dry areas. It is known elsewhere as an introduced species, in California and the United States an invasive species. Description This is an annual or perennial herb producing brittle, scaly whitish stems erect or spreading to lengths between 10 and 40 centimeters. The leaves are greenish white, scaly, and often toothed along the edges. They are widely lance-shaped to diamond in shape and up to 3 or 4 centimeters long. Male flowers are located in leaf axils or in spikelike inflorescences. Female flowers are generally held in small clusters below the male clusters in the leaf axils. The female inflorescence has spongy bract In botany, a bract is a modified or specialized leaf, especially one associated with a reproductive structure such as a flower, inflorescence axis or cone scale. Bracts are usually different from foliage l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aristolochia Littoralis
''Aristolochia littoralis'', the calico flower or مورپنکھ بیل or elegant Dutchman's pipe, is a species of evergreen vine belonging to the family Aristolochiaceae. Etymology The scientific name ''Aristolochia'' was developed from Ancient Greek ''aristos'' (''άριστος'') "best" + ''locheia'' (''λοχεία''), "childbirth" or "childbed", as in ancient times the plant was thought to be effective against infections caused by childbirth. The species Latin name ''littoralis'' means “coastal”. Description ''Aristolochia littoralis'' is a climbing vine that can reach about in length. The slender stems are woody and the leaves are bright green, cordate, amplexicaul, long and wide, forming a dense attractive foliage. Flowers are heart-shaped, greenish yellow with intricate purplish-brown markings. These unusual flowers are about long, grow solitary in the leaf axils and resemble Sherlock Holmes's pipe (hence the common name of "Dutchman's pipe"). The inner surface ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ardisia Elliptica
''Ardisia elliptica'' is an evergreen tree, also known as the shoebutton ardisia, duck's eye and coralberry, native to the west coast of India, Sri Lanka, Indochina, Malaysia, Indonesia and New Guinea. It is a prolific reproducer which has made it a successful invasive species in other locations in the tropics where it has been introduced as a garden ornamental. Description ''Ardisia elliptica'' is a tropical understory shrub that can reach heights of up 5 meters. Undamaged plants in forest habitats are characterized by a single stem, producing short, perpendicular branches. Leaves are elliptic to elliptic-obovate, entire, leathery and alternate. Umbellate inflorescences develop in leaf axils of branch leaves. Petals are light pink. Fruits are drupes that first turn red as they mature and then deep purple / black. Pulp staining fingers a deep purple. Seeds are approximately spherical with a diameter of about 5 mm. Status '' Ardisia solanacea'' and ''Ardisia humilis'' are con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antigonon Leptopus
''Antigonon leptopus'' is a species of perennial vine in the buckwheat family commonly known as coral vine or queen's wreath. This clambering vine is characterized by showy, usually pink flowers that can bloom throughout the year and large, heart-shaped leaves. ''A. leptopus'' is native to the Pacific and Atlantic coastal plains of Mexico, but also occurs as a roadside weed from Mexico south to Central America. It is widely introduced and invasive throughout tropical regions of the world, including in the south and eastern United States, the West Indies, South America, and the Old World tropics of Asia and Africa. This species is utilized for its edible tubers and seeds, but also for its horticultural properties as an ornamental vine in warmer parts of the world. Description ''Antigonon leptopus'' is a fast-growing climbing vine that holds on via tendrils, and is able to reach over 7 metres in length. It has cordate (heart-shaped), sometimes triangular leaves 25 to 75 mm l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anredera Cordifolia
''Anredera cordifolia'', commonly known as the Madeira-vine or mignonette vine, is a South American species of ornamental succulent vine of the family Basellaceae. The combination of fleshy leaves and thick aerial tubers makes this a very heavy vine. It smothers trees and other vegetation it grows on and can easily break branches and bring down entire trees on its own. Description ''Anredera cordifolia'' is an evergreen climber that grows from fleshy rhizomes. It has bright green, heart-shaped, fleshy shiny leaves 4–13 cm long. Wart-like tubers are produced on aerial stems and are a key to identifying the plant. From late summer to autumn, it produces masses of small, fragrant, cream-coloured flowers on dependent racemes, which may be up to in length. The plant spreads via the tubers, which detach very easily. Reproduction ''Anredera cordifolia'' can reproduce through the proliferation of tubers and also from rhizome fragments that may be broken off. Although this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alisma Plantago-aquatica
''Alisma plantago-aquatica'', also known as European water-plantain, common water-plantain or mad-dog weed, is a perennial flowering aquatic plant widespread across most of Europe and Asia, and apparently spread elsewhere in both the Old and New World. Description ''Alisma plantago-aquatica'' is a hairless plant that grows in shallow water, consists of a fibrous root, several basal long stemmed leaves long, and a triangular stem up to tall. It has branched inflorescence bearing numerous small flowers, across, with three round or slightly jagged, white or pale purple petals. The flowers open in the afternoon. There are three blunt green sepals and 6 stamens per flower. The carpels often exist as a flat single whorl. It flowers from June until August. The fruits appear as a ring of seeds inside each flower. Chemistry Chemical constituents of —rhizomes of ''Alisma orientale'' (syn. ''Alisma '' var. ''orientale'') as a traditional Chinese medicine—include alisol A 24-a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ailanthus Altissima
''Ailanthus altissima'' , commonly known as tree of heaven, ailanthus, varnish tree, or in Chinese as ''chouchun'' (), is a deciduous tree in the family Simaroubaceae. It is native to northeast and central China, and Taiwan. Unlike other members of the genus '' Ailanthus'', it is found in temperate climates rather than the tropics. The tree grows rapidly, and is capable of reaching heights of in 25 years. While the species rarely lives more than 50 years, some specimens exceed 100 years of age. Its suckering ability allows this tree to clone itself indefinitely. It is considered a noxious weed and vigorous invasive species, and one of the worst invasive plant species in Europe and North America. In 21st-century North America, the invasiveness of the species has been compounded by its harboring of the also destructive and invasive spotted lanternfly. Description ''A. altissima'' is a medium-sized tree that reaches heights between with a diameter at breast heigh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
