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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 Erythrina

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1 Leaflets hastately lobed; herb or shrub to 2 m tall; seeds bright red; legumes 6-15 (-20) cm long; [native, also cultivated]
1 Leaflets not lobed; tree; seeds dull red or black; legume 15-30 cm long; [cultivated, persistent].
..2 Standard 3-5.4.5 cm long; terminal leaflet ca. 1.5× as long as wide; seeds black
..2 Standard 5-7 cm long; terminal leaflet 0.7-1.0× as long as wide; seeds dull red
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