Ridges on achene surface in Senecio and Taraxacum are useful for absorbing small particles or control-ling surface temperature.Spinule on achene of Taraxacum may be fit for epizoochore.

千里光属植物和蒲公英属植物瘦果纵棱更为突起，可能有利于颗粒和控制温，蒲公英属植物瘦果微刺可能有利于2次传播。