Abstract: The paraffin method was used to study the process of floral-bud differentiation in Osmanthus fragrans‘Tianxiang Taige’. The results show that three different types of flower buds，normal flower bud，special flower bud，and leaflike proliferate-flower bud，were founded in O. fragrans ‘Tianxiang Taige’. The normal and special flower buds shared a common 5-stage morphological differentiation process that was about 6 months. The stages inclued involucrum differentiation，flower primordium differentiation，top flower perianth differentiation，stamen differentiation and pistil differentiation. The pistils degenerated in all three different types of flower buds. The proliferate-flower bud produced atrophied pistils，which were replaced by meristems that eventually differentiated into leaves and branches.

Key words: Osmanthus fragrans, floral-bud, morphological differentiation