Abstract: Xanthoceras Sorbifolia Bunge tree is a new and promising ornamental plant which is featuring its highly ornamental aesthetic values with beautiful gestures,leaves and blossoms,gorgeous colors and relatively long flowering time.In the paper,the author took ornamental Xanthoceras Sorbifolia Bunge tree as the study objective,with 3 years,through methods such as flowering phenology observation and growth status survey and so on,optimally selected the aspects of flowering color,flowering period and flowering fragrance,etc.and got those excellent germplasm tree of ornamental flowers with highly ornamental value. The results showed that the flowering period of superior individual plant lasted for 15 to 20 days,and the average blossoming period for greenbelt was over 30 days in Beijing Badaling National Forest Park.There were three flower series,three colors and six ornamental types in Xanthoceras species.Through the observation a total of 15 strains of excellent germplasm tree were selected as fast thoroughbred breeding,grafting,tissue culture,for the purpose of Xanthoceras Sorbifolia Bunge breeding and promotion of good resource reserves.

Key words: ornamental Xanthoceras Sorbifolia Bunge, excellent germplasm tree, research