Myrtaceae revisited: a reassessment of infrafamilial groups

Cladistic analyses are presented of matK sequence data as well as a nonmolecular database for an identical set of exemplar species chosen to represent the core genera or groups of genera in Myrtaceae. Eleven robust clades are recognized on the molecular data. Polyphyly of the previously recognized M...

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Bibliographic Details
Published in:American journal of botany 2001-11, Vol.88 (11), p.2013-2025
Main Authors: Wilson, Peter G., O'Brien, Marcelle M., Gadek, Paul A., Quinn, Christopher J.
Format: Article
Language:English
Subjects:
Alliances
Cotyledons
Embryos
Fruits
Genera
Hair
Leptospermum
Lophostemon
matK
matK gene
Metrosideros
molecular phylogeny
morphology
Myrtaceae
Stamens
Systematics
Taxa
Tristania
Tristaniopsis
We they distinction
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Summary:Cladistic analyses are presented of matK sequence data as well as a nonmolecular database for an identical set of exemplar species chosen to represent the core genera or groups of genera in Myrtaceae. Eleven robust clades are recognized on the molecular data. Polyphyly of the previously recognized Metrosideros and Leptospermum alliances is confirmed, and several smaller informal taxonomic groupings are recognized from among the members of the former alliance, i.e., the Tristania, Tristaniopsis, Metrosideros, and Lophostemon groups. The nonmolecular analysis provides only limited resolution of relationships. A degree of congruence exists between the two analyses in that two separate fleshy-fruited clades, the Acmena and Myrtoid groups, are identified, as are the Eucalypt and Tristania groups, and Psiloxylon and Heteropyxis are the first lineages to diverge in both analyses. A combined analysis recognized all 11 clades that received strong support from the molecular data. A high level of homoplasy is revealed in many of the nonmolecular characters when they are examined against the combined estimate of phylogeny.
ISSN:0002-9122
1537-2197
DOI:10.2307/3558428