石莼科的模式属；绿色海藻具有两个细胞厚度的叶状体；海莴苣。

Type genus of the family ulvaceae; green seaweed having a thallus two cells thick: sea lettuce.

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一种石莼属的绿色海藻，有膜状叶形的不规则的叶状体，经常用在沙拉中。

Any of several green algae of the genus Ulva, having a membranous leaflike, irregularly shaped thallus sometimes used in salads.

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GUS基因在坛紫菜叶状体体细胞内的瞬时表达；

GUS gene transient expression within the P. haitanensis thallus somatic cells;

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