The differentiation and development processes of flower bud in Torenia fournieri Lind were characterized and some experiments were conducted to investigate the flower fertility. The main results are as follows:1. Seeds were germinated in different time from January to October of 2004 and the duration of onset of flowering was observed. It took 67 days from sowing to the onset of the flower when the seeds were germinated in January and only 34 days for those germinated in August.2. It was found that ...