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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 Piperaceae

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1 Plant an herb; flora bracts glabrous or glandular
1 Plant a shrub or small tree; floral bracts ciliate.
..2 Floral spikes 2-6 in an umbellate cluster, borne in leaf axils; leaf base symmetrical
..2 Floral spike solitary, opposite the leaves; leaf base strongly asymmetrical
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