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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 Cortaderia

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1 Sheaths hairy, sometimes densely so; culms 4-5x as long as panicles; panicles arising well above the leaves; awns of the lemmas 1 mm long or less; [primarily naturalized in TX in our area]
1 Sheaths glabrous to sparsely hairy; culms 2-4x as long as panicles; panicles arising only slightly above the leaves; awns of the lemmas 2.5-5 mm long; [widespread and scattered in the se. US]
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