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Five new species and a systematic synopsis of Pycnandra (Sapotaceae), the largest endemic genus in New Caledonia
Swedish Museum of Natural History, Department of Botany.
2016 (English)In: Australian Systematic Botany, ISSN 1030-1887, E-ISSN 1446-5701, Vol. 29, 1-40 p.Article in journal (Refereed) Published
Abstract [en]

Pycnandra Benth. (Sapotaceae) is the largest endemic genus in New Caledonia and is subdivided into six subgenera. An addition of five species are here described in four subgenera, viz. P. comptonioides Swenson & Munzinger, P. kouakouensis Swenson & Munzinger, P. montana Swenson & Munzinger, P. poindimiensis Swenson & Munzinger and P. versicolor Swenson & Munzinger. Another seven to nine taxa are discussed but remain undescribed owing to the lack of adequate collections (and may remain undescribed pending the interpretation of the Nagoya Protocol). Pycnandra is characterised by a non-areolate higher leaf venation, sepals glabrous on the inner surface, no staminodes, and a single-seeded fruit. The members occur in a wide range of habitats and most species have very specific substrate requirements, growing on ultramafic, non-ultramafic or calcareous substrates. Almost 40 species are restricted to ultramafic substrates and many are now at risk of extinction because of deforestation, deliberately set fires and mining. We provide a systematic synopsis with keys to subgenera and species, phenology, substrate preferences, altitudinal ranges and preliminary IUCN Red List assessments for all described taxa. Four of the five new species are assessed as Critically Endangered. Pycnandra versicolor is in urgent need of conservation management beacuse its entire distribution is inside an active mine on the Koniambo massif.

Place, publisher, year, edition, pages
2016. Vol. 29, 1-40 p.
National Category
Natural Sciences Botany
Research subject
Diversity of life
Identifiers
URN: urn:nbn:se:nrm:diva-1785DOI: 10.1071/SB16001OAI: oai:DiVA.org:nrm-1785DiVA: diva2:945563
Available from: 2016-07-01 Created: 2016-07-01Bibliographically approved

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CiteExportLink to record
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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
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  • de-DE
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More languages
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