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Heteranthera
See list of 2 species in this genusReference: Horn (2002).
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1a. Only linear sessile leaves produced; flowers yellow; filaments glabrous
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1b. Both linear to oblanceolate sessile leaves and petiolate leaves with reniform blades produced on each plant; flowers largely white; filaments pubescent with multicellular hairs
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Each photo represents one species in this genus.