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- Eupatorium_macrocephalum abstract "Eupatorium macrocephalum Less. aka Pompom Weed, is a cosmopolitan perennial plant belonging to the family of Asteraceae and regarded as an invasive weed in some countries. It is native to the southern United States, Central America, South America and was introduced to South Africa. It is classed as a principal weed in Brazil. In South Africa it has been cultivated as an ornamental, is often found on roadsides, and has become of concern for its invading of undisturbed climax grassland and wetlands since the 1960s. It is closely related to Siam Weed, and is one of some 268 species in the genus.This species is rhizomatous with erect stems to 1.3 m tall, and has stem and leaves covered in rough, bristly hairs. It forms dense rosettes of leaves at ground level, suppressing the germination and growth of other species, at the same time producing allelochemicals which adversely affect the growth of neighbouring plants. The plant dies back annually to its root crown, and survives veldfires over the winter period. Its leaves are light green in colour, lanceolate-elliptic in shape, and measure 8 cm x 2 cm. Leaf margins are serrate, the teeth becoming smaller away from the stalk. Flower heads are surrounded by lanceolate, purplish bracts some 8 mm in length. Flowers are large, pink and showy, and exceed the bracts by 6–8 mm. Mature achenes are black and 5 mm long with a pappus of simple bristles.Moths of the genus Adaina and in particular Adaina microdactyla (Hübner), have been investigated as possible biological control agents. Species in the genus include flower borers, leaf feeders and also species that induce stem galls which provide food and accommodation for larvae and pupae. Research at Cedara College of Agriculture has found a rust fungus, Puccinia eupatorii, which invades the seeds and kills the whole plant, including the roots. This rust fungus is specific to E. macrocephalum and would therefore be ideal as a biological control. Other potential insect agents include a stem-galling thrips, Liothrips sp., and the moth Cochylis campuloclinium.Material from this species has been analysed, resulting in the identification of six triterpenes, one diterpene glycoside ester, six steroids, one flavonoid known as cirsilol, and six cinnamic acids derivatives.The name Eupatorium macrocephalum was first published in January 1830 by Christian Friedrich Lessing in Linnaea 5(1): 136–137. 1830. "Eupatorium" was first used by Linnaeus to honour 'Eupator Dionysius' aka Mithridates, an ancient ruler of Anatolia, while 'macrocephalum' means 'large-headed' and refers to the inflorescence.".
- Eupatorium_macrocephalum binomialAuthority Christian_Friedrich_Lessing.
- Eupatorium_macrocephalum class Eudicots.
- Eupatorium_macrocephalum division Flowering_plant.
- Eupatorium_macrocephalum family Asteraceae.
- Eupatorium_macrocephalum genus Eupatorium.
- Eupatorium_macrocephalum kingdom Plant.
- Eupatorium_macrocephalum order Asterales.
- Eupatorium_macrocephalum order Asterids.
- Eupatorium_macrocephalum thumbnail Eupatorium_macrocephalum00.jpg?width=300.
- Eupatorium_macrocephalum wikiPageID "41592061".
- Eupatorium_macrocephalum wikiPageRevisionID "606655184".
- Eupatorium_macrocephalum binomial "Eupatorium macrocephalum".
- Eupatorium_macrocephalum binomialAuthority Christian_Friedrich_Lessing.
- Eupatorium_macrocephalum caption "Cypselae or achene-like fruits/seeds".
- Eupatorium_macrocephalum caption "Flower buds".
- Eupatorium_macrocephalum caption "Flower heads".
- Eupatorium_macrocephalum caption "Mature fruiting heads".
- Eupatorium_macrocephalum familia Asteraceae.
- Eupatorium_macrocephalum genus "''Eupatorium".
- Eupatorium_macrocephalum height "1024".
- Eupatorium_macrocephalum height "2048".
- Eupatorium_macrocephalum height "3072".
- Eupatorium_macrocephalum image "Eupatorium macrocephalum01.jpg".
- Eupatorium_macrocephalum image "Eupatorium macrocephalum02.jpg".
- Eupatorium_macrocephalum image "Eupatorium macrocephalum04.jpg".
- Eupatorium_macrocephalum image "Eupatorium macrocephalum05.jpg".
- Eupatorium_macrocephalum ordo Asterales.
- Eupatorium_macrocephalum regnum "Plantae".
- Eupatorium_macrocephalum species "E. macrocephalum".
- Eupatorium_macrocephalum totalWidth "900".
- Eupatorium_macrocephalum unrankedClassis Eudicots.
- Eupatorium_macrocephalum unrankedDivisio Flowering_plant.
- Eupatorium_macrocephalum unrankedOrdo Asterids.
- Eupatorium_macrocephalum width "2048".
- Eupatorium_macrocephalum width "3072".
- Eupatorium_macrocephalum width "768".
- Eupatorium_macrocephalum subject Category:Eupatorium.
- Eupatorium_macrocephalum type Eukaryote.
- Eupatorium_macrocephalum type Plant.
- Eupatorium_macrocephalum type Species.
- Eupatorium_macrocephalum type Organism.
- Eupatorium_macrocephalum comment "Eupatorium macrocephalum Less. aka Pompom Weed, is a cosmopolitan perennial plant belonging to the family of Asteraceae and regarded as an invasive weed in some countries. It is native to the southern United States, Central America, South America and was introduced to South Africa. It is classed as a principal weed in Brazil.".
- Eupatorium_macrocephalum label "Eupatorium macrocephalum".
- Eupatorium_macrocephalum sameAs m.0_1gk14.
- Eupatorium_macrocephalum sameAs Q15590708.
- Eupatorium_macrocephalum sameAs Q15590708.
- Eupatorium_macrocephalum wasDerivedFrom Eupatorium_macrocephalum?oldid=606655184.
- Eupatorium_macrocephalum depiction Eupatorium_macrocephalum00.jpg.
- Eupatorium_macrocephalum isPrimaryTopicOf Eupatorium_macrocephalum.
