- Family : ASTERACEAE
(Composite Or Aster Or Sunflower Family)
- Family (Hindi name) : GENDA FAMILY (गेंदा फैमिली)
- Family (as per The APG System III) : Compositae
- Synonym(s) : Eupatorium odoratum L.; Chromolaena odorata f. squarrosa (Koster f.) Sunita Garg
- Species Name (as per The IPNI) : Chromolaena odorata (L.) R.M.King & H.Rob.
- Common name : Siam weed, Chritsmas Bush, Bitter Bush
- Vernacular name :
- Rukusi, Phulgandhuri, Gandhuri, Pokasunga (Oria)
- Assam pacha, Communist-pacha (Malayalam)
- Kampurodda (Telugu)
- Habit : Shrub
- Comments / notes : Naturalized in Tropical Asia. Occasional on hills slopes from 500-1000m. A very aggressive colonizer and invader of wastelands and forest clearings.
- Key identification features : Big bushy herb or subshrub; Leaves arrowhead-shaped, opposite; Flowers in clusters, pale pink–mauve or white; Seeds dark coloured, narrow and oblong.
- Flower, Fruit : October-May
- Distribution :
- Andhra Pradesh : Anantapur district, Chittoor district, Y.S.R. Kadapa district, East Godavari district, Guntur district, Krishna district, Kurnool district, S.P.S. Nellore district, Prakasam district, Srikakulam district, Visakhapatnam district, Vizianagaram district, West Godavari district
- Telangana : Nalgonda district, Khammam district, Mahbubnagar district
- Karnataka : Ballari district, Kolar district, Chamarajanagara district
- Kerala : All districts of Kerala
- Maharashtra : Thane district
- Odisha : Angul district, Balasore district, Bargarh district, Balangir district, Boudh district, Cuttack district, Deogarh district, Dhenkanal district, Gajapati district, Ganjam district, Kalahandi district, Kandhamal district, Kendrapara district, Kendujhar district, Khordha district, Koraput district, Malkangiri district, Mayurbhanj district, Puri district, Rayagada district, Sambalpur district, Sundargarh district
- Tamil Nadu : Coimbatore district, Dindigul district, Dharmapuri district, Kancheepuram (Changalpattu-CGP) district, Karur district, Krishnagiri district, Madurai district, Namakkal district, Pudukkottai district, Sivaganga district, Salem district, Tiruchirapalli district, Tiruvannamalai district, Villipuram district, Vellore district
- Gujarat : Gujarat
- Uttar Pradesh : Uttar Pradesh
- Native : Argentina, Bahamas, Belize, Bolivia, Brazil, Cayman Islands, Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, El Salvador, Florida, French Guiana, Guatemala, Guyana, Haiti, Honduras, Jamaica, Leeward Islands, Mexico, Nicaragua, Panamá, Paraguay,
- Exotic/Native : Exotic
- World Distribution : Argentina, Bahamas, Belize, Bolivia, Brazil, Cayman Islands, Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, El Salvador, Florida, French Guiana, Guatemala, Guyana, Haiti, Honduras, Jamaica, Leeward Islands, Mexico, Nicaragua, Panamá, Paraguay, Peru, Puerto Rico, Suriname, Texas, Trinidad-Tobago, Turks-Caicos Islands, Venezuela, Windward Islands
- Conservation Status : Not Evaluated (NE)
- Literature :
- Pullaiah et al., 2007 - Flora of Eastern Ghats Vol. 3
- H.O. Saxena & M. Brahmam, 1995- Flora of Orissa Vol. 2
- R. S. Rao et al., 1986 - Flora of West Godavari District
- R. S. Rao and S. H. Sreeramulu, 1986 - Flora of Srikakulam District
- Matthew, K.M., The Flora of Tamil Nadu Carnatic, Vol.3 (1). Diocesan Press, Madras. 1983
- Sasidharan, N. 2011. Flowering plants of Kerala. DVD, V 2, KFRI.
- Shah G. L. (1978). Flora of Gujarat State Part 1. University Press Sardar Patel University: 381
- Read more :
- Permalink : http://indiaflora-ces.iisc.ac.in/plants.php?name=Chromolaena odorata
- Citation : Sankara Rao, K., Deepak Kumar (2026). India Flora Online. http://indiaflora-ces.iisc.ac.in/plants.php?name=Chromolaena odorata. Downloaded on 16 April 2026.
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Distribution District wise
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