Systematics of Lobelioideae (Campanulaceae): review, phylogenetic and biogeographic analyses
| Autor: | Andrew W. Gichira, Samuel Paul Kagame, Qing-Feng Wang, Ling Yun Chen |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Systematics
monophyletic Asia Lobelia Review Article Plant Science Lobelioideae Magnoliopsida Siphocampylus Molecular Systematics polyphyletic Plantae Phylogeny Ecology Evolution Behavior and Systematics Taxonomy Campanulaceae Australasia biology Asterales Botany biology.organism_classification Pacific Europe Tracheophyta Biogeography Evolutionary biology Pratia QK1-989 Africa Cyanea (plant) Americas Centropogon |
| Zdroj: | PhytoKeys 174: 13-45 PhytoKeys PhytoKeys, Vol 174, Iss, Pp 13-45 (2021) |
| ISSN: | 1314-2003 1314-2011 |
| DOI: | 10.3897/phytokeys.174.59555 |
| Popis: | Lobelioideae , the largest subfamily within Campanulaceae , includes 33 genera and approximately1200 species. It is characterized by resupinate flowers with zygomorphic corollas and connate anthers and is widely distributed across the world. The systematics of Lobelioideae has been quite challenging over the years, with different scholars postulating varying theories. To outline major progress and highlight the existing systematic problems in Lobelioideae , we conducted a literature review on this subfamily. Additionally, we conducted phylogenetic and biogeographic analyses for Lobelioideae using plastids and internal transcribed spacer regions. We found that former studies have reached agreement on the southern African origin of Lobelioideae , herbaceous habit and Asian origin of giant lobelioids, the convergent evolution of giant rosette lobelioids, and lastly, the multiple cosmopolitan and independent radiation of lobelioids in Africa, Pacific Basin, and the Hawaiian Islands. Also, Apetahia Baill., Sclerotheca A.DC., and Cyanea Gaudich. are paraphyletic, while Lobelia L., Pratia Gaudich., Centropogon C.Presl, Siphocampylus Pohl, and Isotoma Lindl. are polyphyletic. The taxonomy of these genera, especially Lobelia , is particularly quite frustrating. This calls for further reappraisals using both morphological and molecular data. |
| Databáze: | OpenAIRE |
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