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Weeds Of National Significance
Weeds of National Significance (WoNS) is a list of the most problematic plant species in Australia Australia, officially the Commonwealth of Australia, is a sovereign country comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands. With an area of , Australia is the largest country by ... as determined by the federal government. Initially a list of 20 taxa were listed and given a rank based on invasiveness, impacts, potential for spread, and socioeconomic and environmental values. An expanded list of 32 taxa was released in April 2012. List of taxa ''Note: The list of individual taxa is greater than the 32 WoNS.'' See also * Invasive species in Australia * Environmental issues in Australia * Flora of Australia * List of invasive plant species in New South Wales References {{Reflist External linksWeeds of National Significanceat the Department of Sustainability, Environment, Water, Population and Communities < ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asparagus Africanus
''Asparagus africanus'', also known as African asparagus, bush asparagus, wild asparagus, climbing asparagus fern, ornamental asparagus and sparrow grass, is an African species of plant that is found in a variety of habitats. It has multiple medicinal properties and is used to treat various ailments. Description ''Asparagus africanus'' is a spiny shrub up to tall or a climbing plant with stems up to long. Stems of up to long have also been recorded. These plants have a rhizomatous root system, from which they can reshoot. Multiple stems grow from a central crown. Bunches of cladodes (modified branchlets) occur at the leaf scales. Each ends in a sharp point. These look fern-like, giving rise to one of this species' common names (climbing asparagus fern). The plant produces white flowers, which, like the leaves, grow in clusters. They have three sepals and three petals, which are similar in appearance. The six white filaments have yellow anthers. Flowers are present between A ... [...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 sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prosopis
''Prosopis'' is a genus of flowering plants in the family Fabaceae. It contains around 45 species of spiny trees and shrubs found in subtropical and tropical regions of the Americas, Africa, Western Asia, and South Asia. They often thrive in arid soil and are resistant to drought, on occasion developing extremely deep root systems. Their wood is usually hard, dense and durable. Their fruits are pods and may contain large amounts of sugar. The generic name means "burdock" in late Latin and originated in the Greek language. Selected species *Mesquites (southern United States, Mexico) ** ''Prosopis glandulosa'' Torr. – honey mesquite; ''Haas'' ( Cmiique Iitom) ** ''Prosopis laevigata'' ( Humb. & Bonpl. ex Willd.) M.C.Johnst. – smooth mesquite ** ''Prosopis pubescens'' Benth. – screwbean mesquite ** ''Prosopis reptans'' Benth. – tornillo ** ''Prosopis velutina'' Wooton – velvet mesquite *"Algarrobos", bayahondas etc. (Neotropics, particularly the Gra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesquite
Mesquite is a common name for several plants in the genus ''Prosopis'', which contains over 40 species of small leguminous trees. They are native to dry areas in the Americas. They have extremely long roots to seek water from very far under ground. As a legume, mesquites are one of the few sources of fixed nitrogen in the desert habitat. These trees bloom from spring to summer. They often produce fruits known as "pods". ''Prosopis'' spp. are able to grow up to tall, depending on site and climate. They are deciduous and depending on location and rainfall have either deep or shallow roots. ''Prosopis'' is considered long-lived because of the low mortality rate after the dicotyledonous stage and juveniles are also able to survive in conditions with low light and drought. The Cahuilla indigenous people of western North America were known to eat the seeds of mesquite. History ''Prosopis'' spp. have been in North America since the Pliocene era and their wood has been dated to 3300 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lantana Camara
''Lantana camara'' (common lantana) is a species of flowering plant within the verbena family (Verbenaceae), native to the American tropics. It is a very adaptable species, which can inhabit a wide variety of ecosystems; once it has been introduced into a habitat it spreads rapidly; between 45ºN and 45ºS and more than in altitude. It has spread from its native range to around 50 countries, where it has become an invasive species. It first spread out of the Americas when it was brought to Europe by Dutch explorers and cultivated widely, soon spreading further into Asia and Oceania where it has established itself as a notorious weed, and in Goa it was introduced by the Portuguese. ''L. camara'' can outcompete native speci leading to a reduction in biodiversity. It can also cause problems if it invades agricultural areas as a result of its toxicity to livestock, as well as its ability to form dense thickets which, if left unchecked, can greatly reduce the Agricultural productivi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hymenachne Amplexicaulis
''Hymenachne amplexicaulis'', also known as West Indian marsh grass in the US, Olive hymenachne in Australia, and hereafter referred to as hymenachne, is New World species in the genus ''Hymenachne ''Hymenachne'' is a genus of widespread wetlands plants that is in the grass family. They may be known commonly as marsh grasses. They are distributed in tropical and subtropical regions of Asia, the Americas, and the Pacific Islands.Clarkson, J. ...''. Hymenachne is from the Greek ''hymen'' meaning "membrane" and ''achne'' meaning "chaff, glume, scale" and amplexicaulis is from Latin, literally "embracing the stem" or "stem-clasping. This freshwater species is native to the tropical and subtropical regions of the West Indies, Northern South America, and Central America. Biology Hymenachne is a perennial grass that primarily reproduces via stolons.Csurhes, S.M., Mackay, A.P. and Fitzsimmons, L. (1999). Hymenachne (Hymenachne amplexicaulis) in Queensland (Department of Natural Resou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ulex Europaeus
''Ulex europaeus'', the gorse, common gorse, furze or whin, is a species of flowering plant in the family Fabaceae, native to the British Isles and Western Europe. Description Growing to tall, it is an evergreen shrub. The young stems are green, with the shoots and leaves modified into green spines, long. Young seedlings produce normal leaves for the first few months; these are trifoliate, resembling a small clover leaf. The solitary flowers are yellow, long, with the pea-flower structure typical of the Fabaceae; they are produced throughout the year, but mainly over a long period in spring. They are coconut-scented. The fruit is a legume (pod) long, dark purplish-brown, partly enclosed by the pale brown remnants of the flower; the pod contains 2–3 small blackish, shiny, hard seeds, which are ejected when the pod splits open in hot weather. Seeds remain viable for 30 years. Like many species of gorse, it is often a fire-climax plant, which readily catches fire but re-g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gorse
''Ulex'' (commonly known as gorse, furze, or whin) is a genus of flowering plants in the family Fabaceae. The genus comprises about 20 species of thorny evergreen shrubs in the subfamily Faboideae of the pea family Fabaceae. The species are native to parts of western Europe and northwest Africa, with the majority of species in Iberia. Gorse is closely related to the brooms and like them has green stems and very small leaves and is adapted to dry growing conditions. However it differs in its extreme thorniness, the shoots being modified into branched thorns long, which almost wholly replace the leaves as the plant's functioning photosynthetic organs. The leaves of young plants are trifoliate, but in mature plants they are reduced to scales or small spines. All the species have yellow flowers, generally showy, some with a very long flowering season. Species The greatest diversity of ''Ulex'' species is found in the Iberian Peninsula, and most species have narrow distributio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andropogon Gayanus
''Andropogon gayanus''. commonly known as gamba grass, Rhodesian blue grass, tambuki grass, and other names, is a species of grass native to most of the tropical and subtropical savannas of Africa. History and naming ''Andropogon gayanus'' was recognised and named by 1833. Its common names include gamba grass, bluestem (Africa, Australia); Rhodesian andropogon (southern Africa); Rhodesian blue grass (Zimbabwe); onga, tambuki grass (north-west Africa); and sadabahar (India). Description This tufting perennial bunchgrass can grow tall and in diameter, and has hairy leaves. Most of its roots are fibrous, spreading close to the surface of the soil for up to , but it also has thick cord roots which store starch and anchor the plant as well as vertical roots able to extract water from a greater depth during the dry season. It produces large numbers of light, fluffy seeds (up to 244,000 seeds each year, with 65% viability), which can be spread by wind, animals or m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genista Linifolia
''Genista linifolia'' is a species of broom known by the common names Mediterranean broom, needle-leaved broom and flax broom. It is native to southwestern Europe, North Africa, and the Canary Islands. Description This is a shrub with hairy green stems and branches which can exceed two meters in height. Its leaves are made up of tough, green, lance-shaped leaflets with woolly undersides. Flowers appear in dense raceme inflorescences toward the ends of the branches. The flowers are bright yellow and pealike. The fruit is a hairy legume pod one to four centimeters long containing several seeds. Invasive plant species It can be found on other continents in areas of similar Mediterranean climate, such as California California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the m ... in the United S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Senecio Madagascariensis
''Senecio madagascariensis'', also known as Madagascar ragwort, is a species of the genus ''Senecio'' and family Asteraceae that is native to Southern Africa. Other common names include Madagascar groundsel and fireweed. It has been included on the noxious weeds list for Hawaii and the reject list for Australia. ''S.madagascariensis'' is the diploid cytotype of S.inaequidens. Description It is an erect, glabrous (smooth stemmed) herb that grows up to 20–60 cm in length. It may become woody and shrub-like in appropriate conditions. Leaves are alternate, narrow-lanceolate to elliptic in shape, usually bright green, smooth with margins that are lobed, serrate or entire. The broader, larger leaves are stem clenching and fleshy, 2–7 cm long and 3-10mm wide. The flowerhead, which is part of an unfirm corymb, is made up of disc florets and ray florets, and is small, yellow and daisy-like, from 1–2 cm in diameter. The plant flowers between late autumn and early ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
