&lt;I&gt;Hoya wongii&lt;/I&gt; (&lt;I&gt;Apocynaceae&lt;/I&gt;, &lt;I&gt;Asclepiadoideae&lt;/I&gt;): a new campanulate flowered species from Brunei (Borneo)

Rodda, Michele; Simonsson, Nadhanielle; Wanntorp, Livia

doi:10.3767/000651911x594423

Cited by 10 publications

(6 citation statements)

References 6 publications

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“…The taxonomy of Hoya at the species level is presently chaotic and IPNI reports over 500 names (The Plant Names Project, 2013), many of which may be incorrect or superfluous (synonyms). Although a few recent morphological studies have helped to unravel the delimitation of some species complexes (e.g., Rodda & al., 2011), major taxonomic questions remain. With this as background we tried to identify as many taxa of Hoya as possible using available literature and the help of experts.…”

Section: Methodsmentioning

confidence: 99%

Wax plants (Hoya, Apocynaceae) evolution: Epiphytism drives successful radiation

Wanntorp

Grudinski

Forster³

et al. 2014

TAXON

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Hoya, a species‐rich, mostly epiphytic genus within tribe Marsdenieae (Apocynaceae), occurs in tropical and subtropical forests of the Indo‐Australian Archipelago (IAA). Previous molecular phylogenetic studies based on a restricted taxon sample have provided a first phylogenetic framework for the genus. Questions remain, however, about the evolution and relationships among the over 300 species of the genus. Here, we (1) present the first well‐resolved phylogenetic tree based on sequences of the plastid spacer regions trnH‐psbA, trnT‐trnL, and of the nuclear‐encoded ITS and 5′‐ETS regions, for 154 species covering all proposed sections and (2) we discuss the evolution of epiphytism and its possible role in the successful radiation of Hoya in the tropical forests of the IAA in light of the new phylogenetic results. According to our results, species of Hoya group into six major lineages (Clades I–VI) with widespread geographic distribution. The earliest‐diverging epiphytic lineages of Clade I are restricted to subtropical continental Asia or tropical to subtropical Australasia (Clade IV), whereas their non‐epiphytic relatives are limited to the tropical Indomalayan (Clade II/III) and Australasian (Clade II) parts of the IAA. Clade V (tropical Indomalaya and Australasia) and Clade VI, with outposts in the Himalayas, Japan, and throughout Australasia, represent the second phase of diversification within Hoya. We hypothesise that Hoya is of tropical to subtropical Indo‐Burma/Himalayan origin and that the common trait epiphytism is connected with the onset of monsoon climates during the Himalayan uplift. The subsequent dispersal of Hoya into the many subareas of the IAA region and eventually Australia and the Southwest Pacific, and its success‐ ful radiation there, are proposed to be linked to its epiphytic life style, a trait that is today only found in 10% of angiosperms.

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Section: Methodsmentioning

confidence: 99%

Wax plants (Hoya, Apocynaceae) evolution: Epiphytism drives successful radiation

Wanntorp

Grudinski

Forster³

et al. 2014

TAXON

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“…However, the actual number of species in the Philippines is pending a critical revision. Forster et al (1998) noted the species diversity of Hoya in Borneo was 'unknown' but recent research has since led to the description of numerous new species in preparation for a comprehensive revision (Rodda & Nyhuus, 2009;Rodda et al, 2011Rodda et al, , 2014aRodda et al, , 2014bRodda et al, , 2015Rodda et al, , 2016Rodda & Simonsson, 2011a, 2011bRodda & Simonsson Juhonewe 2013a, 2013bLamb et al, 2014;Rahayu et al, 2015;Rodda, 2015;Lamb & Rodda, 2016), and a checklist that includes 71 species and one subspecies (Lamb & Rodda, 2016).…”

Section: Introductionmentioning

confidence: 99%

Contribution to a revision of Hoya (Apocynaceae: Asclepiadoideae) of Papuasia. Part I: ten new species, one new subspecies and one new combination

Juhonewe¹,

Rodda²

2017

GBS

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“…These endemic species are accounted for 1.9% of the floral species worldwide (Myers et al 2002). Included in the plant groups that have high species endemism in the country is the genus of Hoya (Rodda et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Enumeration of Hoya species in Mindanao Island, Philippines: Conservation concerns

Obeña

Buot

2019

Biodiversitas

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Abstract. Obeña RDR, Buot JrIE. 2019. Enumeration of Hoya species in Mindanao Island, Philippines: Conservation concerns. Biodiversitas 20: 1699-1707. Unknown resources are difficult to utilize. Hence, an extensive study of literature was carried out to determine the Hoya species found in Mindanao, Philippines. The main purpose of the study was to know the Hoya resources in Mindanao, an area which is not exempted to extensive forest degradation. Many of these Hoya species are endemic and vulnerable to extinction. A total of 33 Hoya species which are epiphytes on trees had been recorded in Mindanao. Three species in the area were classified as endangered based on the Department of Environment and Natural Resources (DENR) list of threatened species (DAO 2007-01), while one species is classified as vulnerable based on DAO 2017-11. For the past years, forest cover in the Philippines has been continuously declining. This scenario can negatively affect the population of Hoya since the forest serves as a habitat for these species. Protection of the forest land in Mindanao can serve as a conservation strategy of the Hoya species.

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<I>Hoya wongii</I> (<I>Apocynaceae</I>, <I>Asclepiadoideae</I>): a new campanulate flowered species from Brunei (Borneo)

Cited by 10 publications

References 6 publications

Wax plants (Hoya, Apocynaceae) evolution: Epiphytism drives successful radiation

Wax plants (Hoya, Apocynaceae) evolution: Epiphytism drives successful radiation

Contribution to a revision of Hoya (Apocynaceae: Asclepiadoideae) of Papuasia. Part I: ten new species, one new subspecies and one new combination

Enumeration of Hoya species in Mindanao Island, Philippines: Conservation concerns

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