ABSTRACT

The order Nostocales is represented by morphologically diverse forms with respect to the branching patterns and polarity of the filaments. With growing understanding of taxonomy and systematics, members of the order Nostocales have also undergone multiple taxonomic revisions. The last decade has seen a surge in the description of new genera and families within the order Nostocales. In this study, we discuss the taxonomic status of all the newly described and reclassified taxa of some of the prominent morphological forms within the order Nostocales by constructing comprehensive phylogenetic trees. Further, we propose certain strategies that would contribute to resolving the taxonomic complexities arising due to inadequate taxon sampling.

中文翻译：

---

蓝藻分类学问题：不分枝、假分枝和真分枝异细胞蓝细菌的综合案例研究

摘要

Nostocales 目由关于细丝的分支模式和极性的形态多样的形式表示。随着对分类学和系统学的日益了解，Nostocales 目的成员也经历了多次分类学修订。在过去的十年里，Nostocales 目内对新属和科的描述激增。在这项研究中，我们通过构建综合系统发育树来讨论 Nostocales 目中一些主要形态形式的所有新描述和重新分类的分类群的分类地位。此外，我们提出了某些有助于解决由于分类单元采样不足而引起的分类复杂性的策略。