大孢子四分体为线形，合点端功能大孢子发育成为蓼型胚囊。
Megaspore tetrad is linear. The chalazal megaspore develops into an embryo sac of Polygonum type.
直线形大孢子四分体，合点端第一、或第二、或第三个大孢子有功能。
The four megaspores that the first one, or the second one, or the third one towards the chala- zal end is functional arrange in a line.
小孢子四分体为四面体型排列，成熟花粉有2 -细胞和3 -细胞型2种。
The microspores are arranged in a tetrahedral tetrad. The mature pollen grains are of the 2-celled and 3-celled types.
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