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.

千属植物和蒲公英属植物瘦果表的纵棱为突起，可能有利于吸附小颗粒和控制表，蒲公英属植物瘦果表的微刺可能有利于2次传播。