Two new Marquesan species of the southeastern Polynesian genus Oparanthus (Asteraceae, Coreopsidinae)

Abstract. Two new species of the recently revised genus Oparanthus (Asteraceae, Subtribe Coreopsidinae) were discovered during the National Tropical Botanical Garden/Smithsonian Institution 1997 expedition to the Marquesas Islands. Oparanthus woodii W. L. Wagner & Lorence, sp. nov. is known from...

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Detalles Bibliográficos
Autores principales: Wagner, Warren L., Lorence, David H.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Pensoft Publishers 2011
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3174440/
https://www.ncbi.nlm.nih.gov/pubmed/22171186
http://dx.doi.org/10.3897/phytokeys.4.1603
Descripción
Sumario:Abstract. Two new species of the recently revised genus Oparanthus (Asteraceae, Subtribe Coreopsidinae) were discovered during the National Tropical Botanical Garden/Smithsonian Institution 1997 expedition to the Marquesas Islands. Oparanthus woodii W. L. Wagner & Lorence, sp. nov. is known from a single population on the island of Nuku Hiva, and Oparanthus tiva W. L. Wagner & Lorence, sp. nov. is known only from Tahuata. Small domatia with a tuft of hairs occur in Oparanthus tiva (and the previously known Oparanthus hivoanus), and similar but naked domatia are found occasionally in Oparanthus woodii. Domatia are of exceedingly rare occurrence in Asteraceae. Both new species are extremely rare and are considered critically endangered (CR) as are the other four species of the genus.

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