Locations within which Ageratina adenophora is naturalised include Australia, southern Europe, Africa, Asia, New Zealand, south-western USA and many. Photo: Bart Wursten Ballantyne Park, Harare. Ageratina adenophora. Photo: Bart Wursten Ballantyne Park, Harare. Ageratina adenophora. Photo: Bart Wursten. A. adenophora has proved to be a very aggressive invasive species in some parts of the world, notably Australia, where it forced some farmers.
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Generate a print friendly version containing only the sections you need. Ageratina adenophora is a perennial herbaceous shrub that may grow to 1 or 2 metres 3. Remya mauiensis Maui remya. Recovery Plan for Oahu Plants: The introduction of Eupatorium species agertaina Australia.
Crofton weed, Ageratina adenophora. None of these organisms offer any real degree of control individually, but the combined effect has reduced plant vigour Dodd, ; Haseler, ; Cullen and Delfosse, Inkata Press, pp. The invasion of land in Australia in the s and s was so rapid and so severe that it even led to some farmers abandoning their landholdings.
Pteris lidgatei no common name: Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report. The symptoms are coughing, difficult breathing and violent blowing after exertion, and are the result of acute oedema swelling of agerratina lungs, leading to haemorrhaging. These are not the only rare native species to be threatened by crofton weed Ageratina adenophora. Blundell, ; Witt and Luke, Trounce R, Dyason R, It prefers wetter pastures e.
Weeds of Australia – Biosecurity Queensland Edition Fact Sheet
It has been present in the Sydney area since approximately Trounce and Dyason, The seeds can also attach themselves, often in mud, to clothes of agricultural workers as well as tourists, hikers, etc. Habitat Top of page A. This name was used by Dioscorides for a number of different plants. Pathological findings include pulmonary interstitial fibrosis and alveolar epithelisation. It spread so fast that in some areas dairy farmers and banana growers adenohpora their holdings Auld,; Holm et al.
This plant reproduces mainly by seed. The most common vernacular name in English is Crofton weed, named after a councillor in Lismore Shire, New South Wales, Australia, in the s, when the species first became identified as an invasive weed. It is a declared noxious weed or Class A noxious plant in a number of US states where it is not yet present USDA-ARS,indicating its potential risks and impacts, and desire for it not to be introduced.
Sheldon Navie the small white flower-heads are borne in dense clusters Photo: Insecticidal activity of extracts from Eupatorium adenophorum against four stored grain insects. It also thrives in damp areas such as wetland margins, drainage lines, gullies and in clearings in wetter forests. Ageratina is derived from Greek meaning ‘un-aging’, in reference to the flowers keeping their color for a long time. It can tolerate some salinity and infertility.
Also, in northern India there has been reference to ‘Eupatorium Chromolaena adenophorum L. The tiny tubular florets mm long are white and contain both male and female flower parts i.
Crofton weed is toxic to livestock.
One study found that seedlings of this species that had begun to establish were soon out-competed by crofton weed Ageratina adenophoraand that there were dense populations of this and other weed species in some of the sites were this species is found. Apparently, the plant was introduced to the area as an ornamental from Sydney by one of his neighbours and spread rapidly onto his property Parsons and Cuthbertson, It was first inadvertently introduced to Yunnan aroundand its rapid spread is due in part to its allelopathic competition with other plant species.
Although native to central Mexico, noting its absence from areas receiving winter frosts in its introduced range, it is likely to be native to low altitude areas in Mexico because higher altitudes are known to receive frosts during winter. Agave sisalana Perrine, Asparagaceae: Sheldon Navie the branched flower clusters at the tips of the stems Photo: It produces numerous upright erect stems from a woody rootstock.
Ageratina adenophora can be manually controlled by cutting with a machete pangafollowed by ripping out the plant or ploughing, then sowing desirable pasture species. Its roots are yellowish in colour and give off a distinct carrot-like smell when broken or damaged.
Biological control of weeds in India.
Ageratina adenophora – Wikipedia
The liver can also be affected, but death from respiratory failure is the eventual result. Sheldon Navie the small white flower-heads are borne in dense clusters Photo: The small compound flowers occur in aegratina spring and summer, and are found in clusters at the ageraitna of branches.
Diversity and Distributions12, A catalogue of problem plants in South Africa. Ageratina adenophora Asteraceae new species to the Italian alien flora and observations on its environmental threats. The plant can spread vegetatively, that is the stems can sprout roots and grow upon contact with earth. It occurs at many sites on the island, but is particularly apparent on exposed mountain slopes e.
Plantago princeps laukahi kuahiwi. When several references are cited, they may give conflicting information on the status. Schiedea hookeri no common name.
Long-term effects upon community structure and ecological processes have been inadequately studied.