Adnation in plants is the "union of unlike parts; organically united or fused with another dissimilar part, e.g. an ovary to a calyx tube, or stamens to petals".[1] This is in contrast to connation, the fusion of similar organs.[2][3]
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.