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Flaveria trinervia (Spreng.) C.Mohr

Synonyms

Brotera contrayerba, Brotera sprengelii, Brotera trinervata, Broteroa trinervata, Eupatorium chilense, Flaveria repanda, Flaveria trinervata, Oedera trinervia

Common names

Clustered yellowtop

My notes

Found only in Irkhaya (Irkaya) Farms.

Extract from Wikipedia article

Flaveria trinervia is a species of flowering plant in the aster family known by the common name clustered yellowtops. It is native to parts of the Americas, including the southeastern and southwestern United States, most of Mexico, and parts of the Caribbean, but it is known in many other places as an introduced species and often a noxious weed, such as in Hawaii. It grows easily in many types of wet habitat, including saline and alkaline soils and highly disturbed habitat. This is an annual herb growing erect and known to exceed two meters in maximum height. The lance-shaped to oval leaves are each up to 15 centimeters long and arranged oppositely in pairs around the stem, their bases sometimes fused together. The edges of the leaves generally have tiny widely spaced teeth. The inflorescence is a large dense cluster of many flower heads, sometimes over 300 in one cluster. Each flower head is either radiate, bearing one single yellowish ray floret, or discoid, bearing one or two smaller disc florets.[+]

LinkClustered yellowtop (Flaveria trinervia) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, October 25, 2014
Location on mapsSalwa Road, Qatar
LinkClustered yellowtop (Flaveria trinervia) with sky as background on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, October 25, 2014
Location on mapsSalwa Road, Qatar
LinkLeaf venation of clustered yellowtop (Flaveria trinervia) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, October 25, 2014
Location on mapsSalwa Road, Qatar
LinkFlowers of clustered yellowtop (Flaveria trinervia) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, October 25, 2014
Location on mapsUnnamed Road, Qatar
LinkClustered yellowtop (Flaveria trinervia) with yellow flowers on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, October 25, 2014
Location on mapsUnnamed Road, Qatar
LinkStink bug on Clustered yellowtop (Flaveria trinervia) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, November 15, 2014
Location on mapsAl Wukair Street, Qatar
LinkPlant of clustered yellowtop (Flaveria trinervia) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, November 15, 2014
Location on mapsAl Wukair Street, Qatar
LinkClustered yellowtop (Flaveria trinervia) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, March 14, 2015
Location on mapsSalwa Road, Qatar
LinkClustered yellowtop (Flaveria trinervia) on a field on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, April 10, 2015
Location on mapsAl Wukair Street, Qatar

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Acknowledgements

QNHG (Qatar Natural History Group) and associated people, for a possibility to participate in their field excursions and to learn about local nature.