The Chinese drugLING-XIAO-HUA (Flos Campsis) ,specifled in the 1990 edition of the 《Pharmacopoeia of the People' s Republic of China》, is the dried flower of Campsis grandiflora (Thunb. )K. Schum. or Campsis radicans(L. )Seem. .family Bignoniaceae. The drug has been used for promoting blood circulation and removing blood stasis,reducing heat in blood and dispelling wing since the ancient time. However, some flowers of the plants from the genus Paulownia, family Scrophulari-aceae,are also used under the same...