Phylogeny
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Astereae: asters, daisys, and goldenrod

Viridiophytes: green plants -> Embryophytes: Land plants -> Angiosperms: flowering plants -> Eudicots: buttercups, peas, pinks, cotton, carrots, and sunflowers -> Asterales: composites, lobelias, and bellflowers: -> Asteraceae: artichokes, daisys, dandelions, lettuce, and sunflowers

Tribe Astereae includes about 2500 species that are placed in 135 genera with a cosmopolitan distribution. The indigenous species of tribe Astereae are placed in eight genera. Most of them are endemic, and several are considered rare or threatened with a narrow distribution. The species of Damnamenia and Pleurophyllum are confined to the Subantarctic Islands. Because of their showy capitula, many members of tribe Astereae are cultivated and make fine ornamentals. Recent phylogenetic studies suggest that the New Zealand members of tribe Astereae have multiple origins. Vittadinia and Lagenifera emerge in a large clade along with several Australian species of Olearia and many northern hemisphere members of the tribe in genera such as Erigeron and Aster. The large Australasian genus Olearia is polyphyletic and comprised of at least 18 separate lineages. However all of the New Zealand species of Olearia are included in a large heterogeneous lineage that includes Celmisia, Damnamenia, Pleurophyllum, and Pachystegia along with a few Australian species of Olearia. The South American genus Chilotrichum is possibly sister to this clade. The polyphyletic nature of Olearia poses a challenging dilemma for plant taxonomists wishing to classify this group in a manner that reflects its evolutionary history. Olearia tomentosa, the type species for the genus, is distantly related to the New Zealand species. A likely outcome will be a new circumscription of Olearia with the recognition of a more narrowly defined segregate genera.

Indigenous or exotic to New Zealand.

NZ Flora Web Site Link to the Ngā Tipu o Aotearoa Database

 
References
Brouillet L LT, Urbatsch LE, Wagstaff SJ, Karaman V, Sancho G. 2009. Molecular phylogeny and biogeography of tribe Astereae. In 'Systematics, evolution, and biogeography of the Compositae.' Ed. AS VA Funk, TF Stussey, RJ Bayer). (IAPT: Vienna)
Cross, E. W.; Quinn, C. J.; Wagstaff, S. J. 2002. Molecular evidence for the polyphyly of Olearia (Astereae: Asteraceae). Plant Systematics and Evolution 235: 99-120.
Lowrey, T. K.; Quinn, C. J.; Taylor, R. K.; Chan, R.; Kimball, R. T. ; De Nardi, J. C. 2001. Molecular and morphological reassessment of relationships within the Vittadinia group of Astereae. American Journal of Botany 88: 1279-1289.
Noyes, R. D.; Rieseberg, L. H. 1999. ITS sequence data support a single origin for North American Astereae (Asteraceae) and reflect deep geographic divvisions in Aster s.l. American Journal of Botany 86: 398-412.
Wagstaff, S. J.; Breitwieser, I. 2002. Phylogenetic relationships of New Zealand Asteraceae inferred from ITS sequences. Plant Systematics and Evolution 231: 203-224.
Distribution

 

Distribution

Last updated: 05-Mar-2013