Young anthers are composed of a protoderm and a central cell mass in early July.
七月上旬，幼花药，由原始表层和中央细胞团组成。
The differentiation of the cells derived from the primordial meristem formed protoderm, ground meristem and procambium strand.
其衍生细胞分化为原表皮，基本分生组织和原形成层。
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