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Click the number at the start of a key lead to highlight both that lead and its corresponding lead. Click again to show only the two highlighted leads. Click a third time to return to the full key with the selected leads still highlighted.

Key to Helosciadium

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1 Fruits 1.5-2.5 mm long, longer than wide; bracts (at base of the rays) 0 (-2)
1 Fruits 0.7-1.0 mm long, slightly wider then long; bracts (at base of the rays) (1-) 3-7
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