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Open Access The genus Dicksonia (Dicksoniaceae - Cyatheales) in western Malesia

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This article is Open Access under the terms of the Creative Commons CC BY-NC-ND licence.

We present an update of the taxonomy of the challenging genus Dicksonia in Malesia excluding New Guinea with its directly adjacent islands. The species D. blumei and D. mollis are maintained and additional distinguishing characters are given. As here defined their ranges do not overlap, with D. blumei present on Sumatra, Java and Bali, and D. mollis on Borneo and the Philippines. On Mindanao, D. mollis is sympatric with a newly recognized species, D. amorosoana sp. nov. On Sulawesi, there is only one species confirmed, D. celebica sp. nov. All these morphological separations are supported by molecular data. Also present in the area are D. timorensis, occurring only on Timor and more closely related to D. antarctica from southern Australia than to the rest of the Malesian taxa, and D. ceramica sp. nov., endemic to Seram Island and with strong affinity to the New Guinean D. lanigera and D. hieronymi. Lectotypes are chosen for D. blumei and Balantium chrysotrichum. Descriptions and a key for all species in the study area are provided.

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Keywords: BIOGEOGRAPHY; INDONESIA; MINDANAO; NEW GUINEA; PHILIPPINES; SULAWESI; TAXONOMY; TREE FERNS

Document Type: Research Article

Publication date: December 1, 2018

This article was made available online on November 29, 2018 as a Fast Track article with title: "The genus Dicksonia (Dicksoniaceae - Cyatheales) in western Malesia".

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  • Blumea is an international journal on the biodiversity, evolution and biogeography of plants, including topics on systematics, floristics, phylogeny, morphology and anatomy. For floristic studies, the focus is on tropical Africa south of the Sahara, tropical Southeast Asia with a strong emphasis on Malesia, and South America with emphasis on the Guianas. Papers in Blumea are subjected to peer review and are in English. Blumea is published three times a year, comprising c. 300 pages in total.
    For more information please contact the Publishing Department of the National Herbarium of the Netherlands.

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