Origin of strains within the LPP clade used in this study.

*Determined by culture morphology of branch absence (U. linza) or presence (U. prolifera).**Originally collected thallus type. In sporophytes, male and female gametophytes were cultured for hybridization.***Accession numbers are recorded in the GenBank sequence database.****This ITS ribotype is completely identical to ones from the other Qingdao strains previously reported [4], [19], [21].*本样本依据无分枝型（U. linza，裂片石莼）与有分枝型（U. prolifera，浒苔）的培养形态学特征确定。**原始采集的藻体类型。针对孢子体材料，将雌雄配子体培养以开展杂交实验。***序列登录号已记录于GenBank序列数据库。****本次的ITS（内转录间隔区）核糖体基因型与此前报道的其他青岛菌株的对应基因型完全一致[4]、[19]、[21]。