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TRIBAL INTERRELATIONSHIPS OF THE ASTERACEAE.

¹Department of Phanerogamic Botany, Swedish Museum of Natural History, P.O. Box 50007, S-104 05 Stockholm, Sweden.

Cladistics : the International Journal of the Willi Hennig Society

|December 24, 2021

Summary

This summary is machine-generated.

This cladistic analysis of Asteraceae reveals a basal split, with Mutisieae-Barnadesiinae as a distinct group. The study clarifies relationships within the Asteroideae subfamily, identifying monophyletic groups and paraphyletic grades.

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Area of Science:

Botany
Phylogenetics
Systematic Botany

Background:

The classification of the Asteraceae (daisy family) has been historically complex.
Previous studies have suggested various relationships, but a comprehensive phylogenetic analysis was needed.

Purpose of the Study:

To reconstruct the evolutionary history of the Asteraceae family.
To clarify tribal and subtribal relationships within the Asteraceae.

Main Methods:

A cladistic analysis was performed using 81 characters.
27 tribes and subtribes of Asteraceae were included in the analysis.
Lobeliaceae was used as an outgroup.

Main Results:

A basal dichotomy was identified, with Mutisieae-Barnadesiinae forming a monophyletic sister group to the rest of the family.
The subfamilies Cichorioideae and Asteroideae do not represent a basal dichotomy.
The Asteroideae are monophyletic, with their sister group within the paraphyletic Cichorioideae.
Mutisieae and Inuleae appear as paraphyletic grade groups at the base of the family and subfamily, respectively.
Potential sister group relationships were suggested within the Asteroideae, such as Anthemideae and Heliantheae s.l., and Astereae and Eupatorieae.

Conclusions:

The study provides a new phylogenetic framework for the Asteraceae.
The traditional subfamilial classification needs revision based on these findings.
Further research is needed to resolve interrelationships within the Cichorioideae and Asteroideae.