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Diodia
See list of 2 species in this genus-
1a. Calyx with 2 sepals; corolla salverform, 8–11 mm long; gynoecium with 2 linear stigmas; fruit 6–9 mm long, glabrous or villous
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1b. Calyx with 4 sepals; corolla funnelform, 5–6 mm long; gynoecium with a single, capitate stigma; fruit 2.5–6 mm long, strigose to hirsute
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Each photo represents one species in this genus.