At the time, in the their chloroplast grana, there are remarkable expansion and stroma thylakoid expanding are circular, the reduplication of grana lamellae are reduced obviously.

• 基粒和基质类囊体膨大，膨大的类囊体呈梭形或圆形，没有发现脂质小球的存在；基粒叠垛程度很低，平均每个基粒类囊体的片层数为5.；4。