labellate

/ˈleɪbəˌleɪt/
adjective
  1. Having a lip or lip-like structure, especially in botany describing a flower with a prominent lip.
    • Botanists classify many mint flowers as labellate because of their lower lip.
    • This labellate bloom is easy to recognize by its large, flat lower petal.
    • The orchid's labellate petal attracts bees for pollination.
Synonyms
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