• Family : ONAGRACEAE
  (Evening-Primrose Family)
• Family (Hindi name) : OENOTHERA FAMILY
• Family (as per The APG System III) : ONAGRACEAE
• Species Name (as per The Plant List) : Ludwigia hyssopifolia (G.Don) Exell
• Vernacular name : Neergrampu (Malayalam)
• Habit : Herb
• Habitat : Marshy places
• Comments / notes : Occasional in plains in perennially moist places.
• Flower, Fruit : August-January
• Collector(s) Name : Arun Singh R, Raja K.Swamy & K.Sankara Rao
• Collection Date : 26/11/2014
• Collection Nos : HJCB-E-165
• Collection Locality : Papavinasanam, Tirumala Hill, Chittoor district (AP)
• Distribution :
  • Andhra Pradesh : Chittoor district, Vishakapatnam district
  • Kerala : All districts of Kerala
  • Odisha : All Wet places
  • Tamil Nadu : Tiruvannamalai district
• World Distribution : Tropical Africa, Southeast Asia, Malaysia, Micronesia, Northern Australia
• Conservation Status : Least Concern (LC)
• Literature : Pullaiah et al., 2007 - Flora of Eastern Ghats Vol. 3; H.O. Saxena & M. Brahmam, 1995- Flora of Orissa Vol. 2; H. O. Saxena and M. Brahmam, 1989 - The Flora of Similipahar (Similipal), Orissa; IUCN Red List of Threatened Species. Version 2014.1. ; Matthew, K.M., Flora of Tamil Nadu Carnatic, Vol.3 (1). Diocesan Press, Madras. 1983; Sasidharan, N. 2011. Flowering plants of Kerala. DVD, V 2, KFRI.
• 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=Ludwigia hyssopifolia. Downloaded on 5 June 2025.

Botanical Description

Herbarium Specimen(s)

Line Drawings

Field Image(s)