Adnation

Adnation in Angiosperms is the fusion of two or more whorls of a flower, e.g. stamens to petals".[1] This is in contrast to connation, the fusion among a single whorl.[2][3]

The stamens of Primula vulgaris are adnate to the corolla

The tropical pitcher plant Nepenthes adnata is named for its adnate leaf bases

References

Little, R. John; Jones, C. Eugene, eds. (1980). A Dictionary of Botany. New York: Van Nostrand Reinhold Company. p. 9. ISBN 0-442-24169-0.
Little, R. John; Jones, C. Eugene, eds. (1980). A Dictionary of Botany. New York: Van Nostrand Reinhold Company. p. 91. ISBN 0-442-24169-0.
Jackson, Benjamin Daydon (1928). A Glossary of Botanic Terms with their Derivation and Accent (fourth ed.). London: Gerald Duckworth & Co. Ltd. p. 89.

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[1] Little, R. John; Jones, C. Eugene, eds. (1980). A Dictionary of Botany. New York: Van Nostrand Reinhold Company. p. 9. ISBN 0-442-24169-0.

[2] Little, R. John; Jones, C. Eugene, eds. (1980). A Dictionary of Botany. New York: Van Nostrand Reinhold Company. p. 91. ISBN 0-442-24169-0.

[Jackson-3] Jackson, Benjamin Daydon (1928). A Glossary of Botanic Terms with their Derivation and Accent (fourth ed.). London: Gerald Duckworth & Co. Ltd. p. 89.