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Nymphoides
See list of 2 species in this genus-
1a. Corolla yellow, 20–25 (–30) mm wide in life, the lobes short-fringed along part of the margin; flowers rarely replaced by spur-like roots; reproductive stem with a pair of opposite leaves subtending the umbel, sometimes extended beyond the umbel and producing additional inflorescences; fruit 12–25 mm long; seeds ciliate on the margin
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1b. Corolla white, 5–8 (–10) mm wide in life, the lobes not fringed on the margin; some flowers usually replaced by a cluster of spur-like roots [Fig. 725]; reproductive stem with a single, alternate leaf subtending the umbel; fruit 4–5 mm long; seeds not ciliate
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Each photo represents one species in this genus.