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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 Lygodium

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1 Sterile pinnae palmately lobed into 4-8 entire-margined to undulate lobes; [native, mainly inland provinces but also Coastal Plain from SC northwards along the coast]
1 Sterile pinnae pinnately divided into numerous serrate pinnules; [non-native, mainly Coastal Plain, but also inland].
..2 Pinnules usually more than 1-pinnate, the primary divisions further divided or at least basally lobed
..2 Pinnules usually 1-pinnate, the primary divisions usually undivided and without basal lobes (other than the cordate to hastate base)
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