Two different early development modes were showed in gametophyte, and they are linear mode in P. yezoensis et al. and zygomorphic pattern in P. katadai.

• （3）在壳孢子萌发分裂初期红毛菜科海藻呈现出两种不同的发育模式，即条斑紫菜等类群的线性发育模式和半叶紫菜的两侧发育模式。