陆地植物新系统树之诠释与简评

Annotations and comments on new phylogenetic trees of land plants

近十年来陆地植物主要谱系系统发育关系已经得到解决,包含角苔类、苔类和藓类的苔藓植物,但可能不是一个单系分支。重新定义的单系的蕨类植物,其中不包括石松植物。根据分子数据结合形态上近裔共性,若干分支的单系性得到支持,这些分支包括真双子叶植物、核心真双子叶植物、蔷薇分支和菊分支等。另外还讨论了有关苔藓植物和买麻藤目系统发育的若干争议问题,并就今后的研究方向进行了展望。

Higher-level relationships of major lineages in the land plants have been resolved during the past 10 years. It was suggested that the bryophytes, comprising three groups, e. g. hornworts, liverworts, mosses, might not form a monophyletic clade. A monophyletic lineage, monilophytes, was redefined and proposed to exclude the lycophytes. Several monophyletie elades of seed plants, namely eudieots, core eudieots, rosids, and asterids, were supported by molecular data with their united morphological synapomorphies. Several major controversies and unsolved problems concerning bryophytes and Gnetales were discussed. Future directions of phylogenetic studies on land plants were prospected finally.