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dc.contributor.authorClarkson, Fiona Marie
dc.contributor.authorClarkson, Bruce D.
dc.contributor.authorGemmill, Chrissen E.C.
dc.date.accessioned2012-07-16T00:01:56Z
dc.date.available2012-07-16T00:01:56Z
dc.date.copyright2012-06
dc.date.issued2012
dc.identifier.citationClarkson, F.M., Clarkson, B.D. & Gemmill, C.E.C. (2012). Biological flora of New Zealand 13. Pittosporum cornifolium, tāwhiri karo, cornel-leaved pittosporum. New Zealand Journal of Botany, 50(2), 185-201.en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/6504
dc.description.abstractA comprehensive review of the morphology, anatomy, taxonomy, chemistry and ecology of the endemic New Zealand facultative shrub epiphyte Pittosporum cornifolium (Pittosporaceae) is presented. Strong habitat specificity restricts this species to lowland forest and coastal habitats, which are widely yet discontinuously distributed north of latitude 42°15′S. Pittosporum cornifolium is typically associated with old growth forest systems and low nutrient substrates, with low mean daily temperatures in the coldest month (<0.6 °C) and high mean October vapour pressure deficits (>0.5 kPa) apparently restricting its distribution. Significant morphological variability is evident in leaves and flowers, especially with respect to plants from the Poor Knights Islands. Genetic analyses of five mainland populations and individuals representing Poor Knights Islands populations revealed relatively low genetic diversity at the population level which is likely to be the result of geographic isolation. Molecular phylogenetic studies suggest a New Caledonian origin for the species with close affinities to both P. pimeleoides subspecies. Several lines of evidence suggest recognition of the Poor Knights Islands entity as a new taxon. However, analysis of additional morphological, reproductive and molecular data across the full geographic range will be required to confirm current inferences. Although populations have declined, P. cornifolium is not currently threatened, however, it should be considered for reintroduction to sites in districts where its range has been severely reduced.en_NZ
dc.language.isoen
dc.publisherTaylor & Francis Groupen_NZ
dc.relation.ispartofNew Zealand Journal of Botany
dc.relation.urihttp://www.tandfonline.com/doi/abs/10.1080/0028825X.2011.645547en_NZ
dc.subjectbiological floraen_NZ
dc.subjectepiphyteen_NZ
dc.subjectfacultativeen_NZ
dc.subjectlowland ecosystemsen_NZ
dc.subjectNew Zealanden_NZ
dc.subjectPittosporaceaeen_NZ
dc.subjectPittosporum cornifoliumen_NZ
dc.subjecttāwhiri karoen_NZ
dc.titleBiological flora of New Zealand 13. Pittosporum cornifolium, tāwhiri karo, cornel-leaved pittosporumen_NZ
dc.typeJournal Articleen_NZ
dc.identifier.doi10.1080/0028825X.2011.645547en_NZ
dc.relation.isPartOfNew Zealand Journal of Botanyen_NZ
pubs.begin-page185en_NZ
pubs.elements-id37697
pubs.end-page201en_NZ
pubs.issue2en_NZ
pubs.volume50en_NZ


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