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Rodda M.,Herbarium | Juhonewe N.S.,National Research Institute of Papua New Guinea
Webbia | Year: 2013

Hoya revoluta, Hoya micrantha, and their synonyms are typified and revised. Hoya plicata, currently a synonym of H. micrantha, is reinstated and applied to a taxon from montane forests of Peninsular Malaysia; Hoya rundumensis is proposed to replace Hoya plicata subsp. rundumensis, a Bornean endemic; Hoya inconspicua is separated once again from Hoya revoluta; a new species, Hoya beccarii, is recognised and described. © 2013 Dipartimento di Biologia, Università di Firenze.


Rodda M.,Herbarium | Simonsson Juhonewe N.,National Research Institute of Papua New Guinea
Webbia | Year: 2015

A new Hoya species from Sabah, Malaysia, H. fauziana Rodda, Simonsson & A. Lamb is described and illustrated. © 2015 Dipartimento di Biologia, Università di Firenze.


Rodda M.,Herbarium | Juhonewe N.S.,National Research Institute of Papua New Guinea
Systematic Botany | Year: 2013

A new species, Hoya corymbosa, from Sabah (Borneo), is described and illustrated. It is a horizontally growing epiphytic shrub with diminutive flowers. Its minute staminal corona lobes lacking revolute outer margins and broad, flat caudicles of the pollinarium (resembling those of Dischidia) are quite peculiar within the genus, which is otherwise characterized by corona lobes with revolute margins and generally round to oval caudicles. Its position in Hoya has been confirmed by phylogenetic analysis based on nuclear ribosomal ITS region, the matK gene and psbA-trnH intergenic spacer. © Copyright 2013 by the American Society of Plant Taxonomists.


Rodda M.,The Herbarium | Simonsson Juhonewe N.,National Research Institute of Papua New Guinea | Lamb A.,Independent
Webbia | Year: 2015

A new Hoya species from Sabah, Malaysia, H. fauziana Rodda, Simonsson & A. Lamb is described and illustrated. © 2015 Dipartimento di Biologia, Università di Firenze


Juhonewe N.S.,National Research Institute of Papua New Guinea | Rodda M.,Herbarium
Webbia | Year: 2012

A new species of Impatiens (Balsaminaceae), Impatiens evelinae, is described and illustrated. It is found in two localities in montane forests of Morobe Province, Papua New Guinea, and represents the second Impatiens species discovered on the island of New Guinea.

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