Glossary of Plant Anatomy

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keel [PO:0025327; plant anatomy term ]
A boat-shaped collective phyllome structure (PO:0025023) that consists of the two lowest petals (PO:0009032) of a papilionaceous corolla (PO:0009059).
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keel petal [PO:0025326; plant anatomy term ]
A petal (PO:0009032) that is one of the two lowest petals of a papilionaceous corolla (PO:0025324).
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