紫草科
Lappula duplicicarpa and L. semiglabra(Boraginaceae)are early-spring ephemerals common in the Junggar Desert. They produce heteromorphic fruits, and nutlets developed from each flower differ in their morphology, pattern of detachment and method and distance of dispersal.
两形果鹤虱(Lappula duplicicarpa)和异形狭果鹤虱(L. semiglabra)是分布于准噶尔荒漠的两种紫草科鹤虱属短命植物,两种植物同一花中均能产生两种形态、脱落及扩散方式明显不同的小坚果,且同一花序上不同部位的花中产生的异形果实比例不同。