Article thumbnail

Taxonomy and biogeography of the New Caledonian species of \u3ci\u3eXylopia\u3c/i\u3e L. (Annonaceae)

By David M. Johnson, Jérôme Munzinger, Julie A. Peterson and Nancy A. Murray

Abstract

A taxonomic review of the New Caledonian representatives of the pantropical tree genus Xylopia L. (Annonaceae) is presented based on museum study of 157 collections. Distinctions are clarified among the four endemic species, two of them previously undescribed in flower and two others described in the literature from only the type collections. A key and species descriptions are presented. Xylopia pancheri Baill., the most frequently collected species, occurs in maquis environments with ultramafic rocks in the central and southern regions of the island, as well as on the Ile des Pins. Xylopia vieillardii Baill. is widespread in low elevation humid forests but the remaining two species, X. dibaccata Daniker and X. pallescens Baill., have restricted distributions and their ecology is still incompletely known. Xylopia pancheri shares similarities with the endemic Fijian species X. degeneri A.C.Sm. and X. vitiensis A.C.Sm.; the remaining three species share more traits with the Fijian endemic X. pacifica A.C.Sm. Taxonomie et biogéographie des espèces de Xylopia L. (Annonaceae) de Nouvelle-Calédonie. Une revision taxonomique des representants neo-caledoniens du genre arborescent et pantropical Xylopia L. (Annonaceae) est presentee, basee sur l’etude de 157 specimens d’herbier. Les distinctions entre les quatre especes endemiques sont clarifiees, deux d’entre-elles precedemment non decrites en fleurs, et les deux autres decrites dans la litterature uniquement des collections types. Une clef et la description des especes sont presentees. Xylopia pancheri Baill., l’espece la plus frequemment recoltee, croit en maquis sur roches ultramafiques dans les regions centrales et sud de la grande-terre, de meme que sur l’Ile des Pins. Xylopia vieillardii Baill. est largement repandue en foret humide de basse altitude, mais les deux dernieres especes, X. dibaccata Daniker et X. pallescens Baill., ont des distributions restreintes et leur ecologie est toujours incompletement connue. Xylopia pancheri montre des similarites avec les especes endemiques fidjiennes X. degeneri A.C.Sm. et X. vitiensis A.C.Sm. ; les trois autres especes semblent plus proches de l’espece endemique fidjienne X. pacifica A.C.S

Topics: Annonaceae, Xylopia, New Caledonia, endemism, biogeography, seed dispersal, Botany, Entomology, Life Sciences, Plant Sciences
Publisher: DigitalCommons@University of Nebraska - Lincoln
Year: 2013
OAI identifier: oai:digitalcommons.unl.edu:entomologyfacpub-1471
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • https://digitalcommons.unl.edu... (external link)
  • https://digitalcommons.unl.edu... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.