中文摘要：

把内部抄录分隔符基于原子 ribosomal DNA 的顺序数据(它的) 1 ， 5.8 S ，并且它的 2 ，分子的发展史在在 2007 的夏天从 Qingdao 海岸收集的 Ulvaceae 种类上被分析，包括 15 从七个地点从 10 个地点和 10 件免费漂浮的 Enteromorpha 样品依附 Ulva 和 Enteromorpha 样品。支持的结果 monophyly 所有免费漂浮的 Enteromorpha 取样，从 Qingdao 海岸暗示免费漂浮的 Enteromorpha，和依附的 Ulvaceae 种类的 unialgal 作文被组织进另外的五 clades，建议他们不是简历在那个季节的免费漂浮的 Enteromorpha 的地理起源。

英文摘要：

Based on the sequence data of the nuclear ribosomal DNA internal transcribed spacer （ITS） 1, 5.8 S, and ITS 2, the molecular phylogeny was analyzed on Ulvaceae species collected from Qingdao coasts in summer of 2007, including 15 attached Ulva and Enteromorpha samples from 10 locations and 10 free-floating Enteromorpha samples from seven locations. The result supported the monophyly of all free-floating Enteromorpha samples, implying the unialgal composition of the free-floating Enteromorpha, and the attached Ulvaceae species from Qingdao coasts were grouped into other five clades, suggesting that they were not the biogeographic origin of the free-floating Enteromorpha in that season.