The National Flower of the Republic of China was officially designated as the five petaled plum blossom by the Executive Yuan of the Republic of China (ROC) on July 21, 1964. The flower has great symbolic value for the people of the ROC. The triple grouping of stamens (one long and two short) represents Dr. Sun Yat-sen's Three Principles of the People, while the five petals symbolize the five branches of the ROC government: Executive Yuan, Legislative Yuan, Judicial Yuan, Examination Yuan and Control Yuan. The flower has also been proposed as the national flower for the People's Republic of China.
Source : http://en.wikipedia.org/wiki/National_Flower_of_the_Republic_of_China
See Also : Flowers India, Birthday Flowers, Flowers and Gifts