adnation

Adnation in plants is the "union of unlike parts; organically united or fused with another dissimilar part, e.g.

1. Adnation occurs when stamens are fused to petals in some flowers.
   当雄蕊与花瓣在一些花中融合时，就发生了合生现象。
2. In botany, adnation refers to the fusion of different floral organs.
   在植物学中，合生是指不同花部器官的融合。