A reassessment of tribal affinities of Cratystylis and Haegiela (Asteraceae) based on three chloroplast DNA sequences

The tribal affinities of Cratystylis and Haegiela were assessed using three chloroplast DNA sequences, the trnL/F spacer, the trnL intron and the matK coding region. The outgroup was represented by two species of the subfamily Barnadesioideae, whereas one to seven genera (45 species including Cratys...

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Bibliographic Details
Published in:Plant systematics and evolution 2003-02, Vol.236 (3/4), p.207-220
Main Authors: Bayer, R. J., Cross, E. W.
Format: Article
Language:English
Subjects:
Affinity
Bats
Biological taxonomies
Chloroplast DNA
Chloroplasts
Cultural history
Evolution
Gene sequencing
Genera
Gnaphalieae
New genus
Nucleotide sequence
Organic chemistry
Phylogenetics
Phylogeny
Pollen
Spacer
Taxa
We they distinction
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Summary:The tribal affinities of Cratystylis and Haegiela were assessed using three chloroplast DNA sequences, the trnL/F spacer, the trnL intron and the matK coding region. The outgroup was represented by two species of the subfamily Barnadesioideae, whereas one to seven genera (45 species including Cratystylis and Haegiela) of the tribes of the Asteroideae [Anthemideae (6 genera), Astereae (7), Calenduleae (2), Gnaphalieae (7), Heliantheae s.1. (5), Inuleae s.str. (3), Plucheeae (3), Senecioneae (4)] and Cichorioideae, [Arctotideae (1), Cardueae (2), Lactuceae (2), Liabeae (1), Mutisieae (1) and Vernonieae (1)] comprise the ingroup. Phylogenetic analysis indicates that Cratystylis has strong support as a member of the tribe Plucheeae, whereas Haegiela is a member of Gnaphalieae. At some point in their taxonomic history, both genera have been placed in these tribes and there are good morphological and chemical characters that justify these placements. The monotypic Haegiela was once included in Epaltes (Plucheeae) and this study has confirmed the need for the separation of the two genera. The genus Cratystylis appears to be monophyletic.
ISSN:0378-2697
1615-6110
2199-6881
DOI:10.1007/s00606-002-0233-x