• Family : ASTERACEAE
  (Composite Or Aster Or Sunflower Family)
• Family (Hindi name) : GENDA FAMILY (गेंदा फैमिली)
• Family (as per The APG System III) : COMPOSITAE
• Species Name (as per The Plant List) : Ageratum houstonianum Mill.
• Common name : Flossflower
• Vernacular name : Kaliyamman-pathiri, Michangala, Neela appa (Malayalam)
• Habit : Herb
• Habitat : Forest edges near streams at high elevations
• Comments / notes : Naturalized in Tropical Asia. On hills above 1000m in fallow fields and disturbed grounds.
• Flower, Fruit : Throughout the year
• Distribution :
  • Andhra Pradesh : Vishakapatnam district
  • Karnataka : Chikkamagaluru district, Dakshina Kannada district, Udupi district
  • Kerala : Palakkad district, Thrissur district, Idukki district, Pathanamthitta district, Kollam district
• Native : Tropical America
• World Distribution : Pantropical weed
• Conservation Status : Not Evaluated (NE)
• Literature : Pullaiah et al., 2007 - Flora of Eastern Ghats Vol. 3; 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; Udayan, Ravikumar and Udaiyan 2004. New Plant records from the state of Karnataka. J. Ind. For. May, 2004.; Gopalakrishna Bhat, 2014 - Flora of South Kanara.
• Citation : Sankara Rao, K., Raja K Swamy, Deepak Kumar, Arun Singh R. and K. Gopalakrishna Bhat (2019). Flora of Peninsular India. http://peninsula.ces.iisc.ac.in/plants.php?name=Ageratum houstonianum. Downloaded on 2 April 2025.

Botanical Description

Herbarium Specimen(s)

Field Image(s)