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表棱为，能有利于吸附小颗粒和控制表温度，蒲公英属植物瘦果表微刺能有利于2次传播。