子叶

Dicotyledonous plants retain a series of strands.

双子叶植物中保留着一系列的束。

All trees except palms are dicotyledons.

除了棕榈树，所有的树都是双子叶植物。

The embryo consists of two large fleshy cotyledons.

胚有两片大而肉质的子叶。

The cotyledons of the mature embryo are either green, yellow or chalky yellow.

成熟胚的子叶是绿色， 黄色或浅黄色。

The dicotyledons diverged at an early stage of their evolution into two main groups.

双子叶植物在演化的早期阶段就已分化为两大支派。