Bidens meyeri (Asteraceae, Coreopsideae): a new critically endangered species from Rapa, Austral Islands

descriptionPublicationkeyboard_double_arrow_right Article 13 Oct 2014Publisher:Pensoft PublishersJournal:PhytoKeys, volume 42, pages 39-47 (issn: 1314-2011, eissn: 1314-2003,

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Authors: Funk, Vicki Ann; Wood, Kenneth R.;

doi: 10.3897/phytokeys.42.8408

pmid: 25383010

pmc: PMC4225073

handle: 10088/25221

Bidens meyeri (Asteraceae, Coreopsideae): a new critically endangered species from Rapa, Austral Islands

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Abstract

Bidensmeyeri (Asteraceae/Compositae) is described and illustrated from Rapa, Austral Islands, (French Polynesia). This new species is presumed to be most closely related to Bidenssaint-johniana from nearby Marotiri Island. Bidensmeyeri may be distinguished from Bidenssaint-johniana based on the length of the peduncle (3 cm versus 10 cm), apex of the inner involucral bracts (glabrous vs. puberulent), smaller leaves (2.0-2.3 cm vs. 5-6 cm), and the general smaller size of the new species. Known from less than 50 individuals and restricted to one remote location, Bidensmeyeri falls into the IUCN Critically Endangered (CR) category. The new species is named in honor of Dr. Jean-Yves Meyer, Délégation à la Recherche, Polynésie Française.

Related Organizations

Smithsonian Institution
United States
Smithsonian Institution Archives
United States
National Tropical Botanical Garden
United States

Keywords

Compositae, Asterales, Oceania, conservation, Botany, French Polynesia, IUCN Red List Category, Asteraceae, Austral Islands, Tracheophyta, Magnoliopsida, Rapa Iti., BidensBidensPlantae, QK1-989, endemic, Coreopsideae, Bidens, Plantae, Research Article

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