Enydra fluctuans Lour.

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Photo: Bart Wursten
Moenge, Itimbiri River, DR Congo. © Botanic Garden Meise

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Description:	Perennial herb. Stems hollow, prostrate or ascending, rooting at the nodes. Leaves opposite, (sub)sessile, up to 12 cm long, narrowly oblong, subhastate, subcordate at the base, minutely glandular-punctate; margin entire or serrate. Capitula axillary, solitary, sessile, up to 20 mm diameter. Involucral bracts 9-15 mm long, broadly ovate, many-nerved. Ray-florets c. 2.2 mm long, greenish-yellow with a very short, 3-dentate ligule, less than 1 mm long. Disc florets yellowish, c. 3 mm long. Achenes brown, narrowly oblong, 2.4 - 3.7 mm long, dotted with minute black or golden glands; pappus absent.
Type location:	Cochinchina
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Worldwide distribution:	Tropical Africa and Southeast Asia to Australia
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Literature:	Beentje, H.J. & Ghazanfar, S.A. (eds.) (2005). Compositae (Part 3) Flora of Tropical East Africa Pages 768 - 770. (Includes a picture). Mapaura, A. & Timberlake, J. (eds) (2004). A checklist of Zimbabwean vascular plants Southern African Botanical Diversity Network Report No. 33 Sabonet, Pretoria and Harare Page 25. Ntore, S. & al. (2024). Checklist of the vascular plants of Burundi Page 64. Wild, H. (1967). The Compositae of the Flora Zambesiaca area. 1. Heliantheae. Kirkia 6(1) Pages 35 - 36.

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Flora of Burundi: Enydra fluctuans
Flora of Mozambique: Enydra fluctuans
Flora of Zambia: Enydra fluctuans
Flora of Zimbabwe: Enydra fluctuans

External websites:

African Plants: A Photo Guide (Senckenberg): Enydra fluctuans
African Plant Database: Enydra fluctuans
BHL (Biodiversity Heritage Library): Enydra fluctuans
EOL (Encyclopedia of Life): Enydra fluctuans
GBIF (Global Biodiversity Information Facility): Enydra fluctuans
Google: Web - Images - Scholar
iNaturalist: Enydra fluctuans
IPNI (International Plant Names Index): Enydra fluctuans
JSTOR Plant Science: Enydra fluctuans
Mansfeld World Database of Agricultural and Horticultural Crops: Enydra fluctuans
Plants of the World Online: Enydra fluctuans
Tropicos: Enydra fluctuans
Wikipedia: Enydra fluctuans