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Phylogeny reconstruction of Callitris Vent. (Cupressaceae) and its allies leads to inclusion of Actinostrobus within Callitris

Phylogeny reconstruction of Callitris Vent. (Cupressaceae) and its allies leads to inclusion of... Relationships between Callitris , Actinostrobus and Neocallitropsis , members of the southern hemisphere ‘callitroid clade’ (Callitroideae sensu Gadek et al . 2000) of Cupressaceae, are estimated using a database of 42 morphological and anatomical characters. Callitris is paraphyletic, with Actinostrobus being closer to a large well supported clade of 15 Australian species of Callitris than are C. baileyi , C. macleayana and the New Caledonian taxa. The New Caledonian unispecific endemic, Neocallitropsis , is sister to the clade comprising all Callitris and Actinostrobus species. There are marked differences between this estimate of the phylogeny and two recent estimates based on nuclear encoded DNA sequence data and non-molecular data, respectively, but some simlarities to the molecular estimate are highlighted and lead us here to formally include Actinostrobus within Callitris . Further molecular data are needed to test these results and explore the cause of the conflict between these estimates of the phylogeny within the group, and the status of Neocallitropsis . http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Australian Systematic Botany CSIRO Publishing

Phylogeny reconstruction of Callitris Vent. (Cupressaceae) and its allies leads to inclusion of Actinostrobus within Callitris

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Publisher
CSIRO Publishing
Copyright
CSIRO
ISSN
1030-1887
eISSN
1446-4701
DOI
10.1071/SB09044
Publisher site
See Article on Publisher Site

Abstract

Relationships between Callitris , Actinostrobus and Neocallitropsis , members of the southern hemisphere ‘callitroid clade’ (Callitroideae sensu Gadek et al . 2000) of Cupressaceae, are estimated using a database of 42 morphological and anatomical characters. Callitris is paraphyletic, with Actinostrobus being closer to a large well supported clade of 15 Australian species of Callitris than are C. baileyi , C. macleayana and the New Caledonian taxa. The New Caledonian unispecific endemic, Neocallitropsis , is sister to the clade comprising all Callitris and Actinostrobus species. There are marked differences between this estimate of the phylogeny and two recent estimates based on nuclear encoded DNA sequence data and non-molecular data, respectively, but some simlarities to the molecular estimate are highlighted and lead us here to formally include Actinostrobus within Callitris . Further molecular data are needed to test these results and explore the cause of the conflict between these estimates of the phylogeny within the group, and the status of Neocallitropsis .

Journal

Australian Systematic Botany – CSIRO Publishing

Published: May 31, 2010

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