Sect. Carpesium (Compositae)
组1. 叶苞组——Sect. Carpesium——Sect. Conyzoides DC., Prodr. 6: 281. 1837, pro maxima parte, sp. cit. exclud.: C. trachelifolium Less.; Maxim. in Mel. Biol. 9: 281. 1874, pro maxima parte, sp. cit. exclud.: C. divaricatum Sieb. et Zucc.
形态特征：总苞外层苞片草质，与内层苞片近等长或更长，多少反折，常与苞叶无明显区别。