(异系配合)：亲缘关系较远的生物体产生的配子相互融合。

Exogamy The fusion of gametes produced by organisms that are not closely related.

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同宗配合种类可以产生形态大小明显不同的配子，使之能发生相互融合，因此它们是有效的雌雄同体植物。

Homothallic species may produce distinctly different sizes of gametes that can fuse with each other and are thus effectively hermaphrodite. Compare heterothallism.

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