- Family : CONVOLVULACEAE
(Morning-Glory Family)
- Family (Hindi name) : KALADANA FAMILY (कालादाना फैमिली)
- Family (as per The APG System III) : CONVOLVULACEAE
- Species Name (as per The Plant List) : Merremia umbellata subsp. orientalis (Hallier f.) Ooststr.
- Common name : Yellow Merremia, Yellow Woodrose
- Vernacular name : Kolavar valli (Tamil); Catukattutivva, Kappativa, Errumale (Telugu); Paninoi (Oria); Kolavaravalli, Koravalli, Vayara (Malayalam)
- Habit : Climber
- Habitat : All type of forests, also in the plains
- Comments / notes : Occasional on hills above 900m on thickets.
- Flower, Fruit : November-April
- Distribution :
- Andhra Pradesh : East Godavari district, Kambakkam Hills (Chittoor district), Visakhapatnam district
- Odisha : Cuttack district, Mayurbhanj district, Sambalpur district, Jajpur district, Koraput district
- Tamil Nadu : Coimbatore district
- World Distribution : Tropical East-Africa, Seychelles, Tropical Asia
- Conservation Status : Not Evaluated (NE)
- Literature : 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; H. O. Saxena and M. Brahmam, 1989 - The Flora of Similipahar (Similipal), Orissa; 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.
- 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=Merremia umbellata subsp. orientalis. Downloaded on 4 November 2025.
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