Bauhinia-紫荆

Bauhinia is a genus of more than 200 species of flowering plants in the subfamily Caesalpinioideae of the large flowering plant family Fabaceae, with a pantropical distribution. The genus was named after the Bauhin brothers, Swiss-French botanists. Many species are widely planted in the tropics as orchid trees, particularly in northern India, Vietnam and southeastern China. In the United States of America, the trees grow in Hawaii, coastal California, Texas, Louisiana, and Florida. Bauhinia  blakeana is the floral emblem of Hong Kong - a stylized orchid tree flower appears on the Hong Kong flag and Hong Kong Airlines uses 'Bauhinia' as its radio callsign in air traffic communication. -From Wikipedia