Rosids represent the largest of the eight major clades of core eudicots comprising of 140 families and approximately one-third of all angiosperm species (Soltis and Soltis, 2004). Other than the traditional Rosidae, it encompasses families from Magnoliidae, Dilleniidae and Hamamelidae ([Cronquist, 1981], [Takhtajan, 1980] and [Takhtajan, 1997]). Relationships within the rosids still remain unclear, but with addition of new data in the form of complete plastome sequences, pieces of the puzzle seem to be falling in the right places. With the completion of the grape chloroplast genome (Jansen et al., 2006), doubts regarding “Vitis sister to the rosids” have been eliminated. However, relationships within the two large subclades of rosids, eurosids I (fabids) and II (malvids), remain uncertain and poorly resolved ([Savolainen et al., 2000a], [Savolainen et al., 2000b] and [Soltis et al., 2000]).
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机译：玫瑰色代表着由140个科组成的八大主要双子叶植物进化枝中最大的一个，约占所有被子植物物种的三分之一（Soltis和Soltis，2004）。除传统的蔷薇科外，它还包括Mag科、,科和金缕梅科（[Cronquist，1981]，[Takhtajan，1980]和[Takhtajan，1997]）。虫类中的关系仍然不清楚，但是随着以完整的质体组序列的形式添加新数据，难题似乎在正确的地方。随着葡萄叶绿体基因组的完成（Jansen et al。，2006），对“葡萄红锈病”的疑虑已经消除。然而，在两个大的子类中，欧洲类I（类腺体）和欧洲类II（疟原虫）之间的关系仍然不确定且难以解决（[Savolainen等人，2000a]，[Savolainen等人，2000b]和[Soltis等人。，2000]）。
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