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Key to Boerhavia

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1 Fruit truncate at the apex, glabrous, with longitudinal ribs acute and winglike; annual
1 Fruit rounded at apex, stipitate-glandular, with longitudinal ribs rounded; perennial.
..2 Leaves well-distributed throughout the plant; inflorescences axillary and terminal; branches spreading-villous or hispid to minutely and finely pubescent
..2 Leaves mostly concentrated in the basal ½ of the plant; inflorescences mostly terminal; branches glabrate or glabrous
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