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Hippobroma longiflora
Small, white, star-shaped flower.long green jagged leaves.
Tropical
Size and edging of the leaves look like a cousin of the dandelion. Wikipedia: "It is notable for its concentrations of two pyridine alkaloids: lobeline and nicotine. The effects of nicotine and lobeline are quite similar, with psychoactive effects at small dosages and with unpleasant effects including vomiting, muscle paralysis, and trembling at higher dosages."