Senna uniflora, the oneleaf senna, is a species of flowering plant in the family Fabaceae.

[2] It is native to Mexico, Central America, the Caribbean, Colombia, Venezuela, and most of Brazil, and has been introduced to India, Mauritius, and Réunion.

[1] Although it is somewhat weedy and invasive, it is used to out-compete the pernicious weed Parthenium hysterophorus.

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