Abstract Multiple abnormal individuals of Ecklonia stolonifera with thalli that developed numerous shoot-like structures on the lateral blades were found in two littoral regions of Nakanoshima in the Oki Islands, Shimane Prefecture, Japan. Except for the presence of these diagnostic structures, no other morphological differences were observed between the abnormal and normal individuals. The development of the shoot-like structures isolated from the lateral blade was the same as that of typical vegetative reproductive sporophytes that formed on stolons. In the abnormal individuals, when cultivation was performed using zoospores, the shoot-like structures were observed on the progeny after 18 months of culture and 20.0% of individuals exhibited these structures.

中文翻译：

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日本隐岐群岛中之岛海岸附近的 Ecklonia stolonifera (Laminariales, Phaeophyceae) 菌体的异常无性繁殖

摘要 在日本岛根县隐岐群岛中之岛的两个沿海地区发现了多个具有菌体的 Ecklonia stolonifera 异常个体，在侧叶片上形成了许多芽状结构。除了这些诊断结构的存在外，在异常个体和正常个体之间没有观察到其他形态学差异。从侧叶分离的枝条状结构的发育与匍匐茎上形成的典型营养繁殖孢子体的发育相同。在异常个体中，当使用游动孢子进行培养时，在培养 18 个月后在后代上观察到枝条状结构，20.0% 的个体表现出这些结构。