The Office of Forest and Plant Conservation Research

Chatuchak, Thailand

The Office of Forest and Plant Conservation Research

Chatuchak, Thailand

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Cusimano N.,Ludwig Maximilians University of Munich | Bogner J.,Augsburger Str | Mayo S.J.,Royal Botanic Gardens Kew | Boyce P.C.,The Office of Forest and Plant Conservation Research | And 5 more authors.
American Journal of Botany | Year: 2011

Premise of the study: The first family-wide molecular phylogeny of the Araceae, a family of about 3800 published species in 120 genera, became available in 1995, followed by a cladistic analysis of morpho-anatomical data in 1997. The most recent and comprehensive family-wide molecular phylogeny was published in 2008 and included species from 102 genera. We reanalyzed the molecular data with a more complete genus sampling and compared the resulting phylogeny with morphological and anatomical data, with a view to contributing to a new formal classification of the Araceae. Methods: We analyzed 113 aroid genera and 4494 aligned nucleotides that resulted from adding 11 genera to the 2008 molecular matrix. We also analyzed 81 morphological characters in the context of the molecular phylogeny, using an extended version of the 1997 morpho-anatomical data set. Key results: The resulting maximum-likelihood phylogeny is well resolved and supported, and most of the 44 larger clades also have morphological or anatomical synapomorphies as well as ecological or geographic cohesion. Of the 44 clades, 16 are here newly circumscribed and informally named. However, some relationships remain poorly supported within the Aroideae subfamily. The most problematic placement is Calla within Aroideae, which conflicts with the distribution of morphological, anatomical, and palynological character states. Conclusions: The comparison of the molecular analysis with morphological and anatomical data presented here represents an important basis for a new formal classification for the Araceae and for the understanding of the evolution of this ancient family, a monocot group known in the fossil record from the early Cretaceous. © 2011 Botanical Society of America.


Wong S.Y.,University Malaysia Sarawak | Wong S.Y.,Universiti Sains Malaysia | Boyce P.C.,The Office of Forest and Plant Conservation Research
Botanical Studies | Year: 2010

Hestia S.Y. Wong & P.C. Boyce is described as a new genus from Sarawak typified by Hestia longifolia (Ridl.) S.Y. Wong & P.C. Boyce (syn. Schismatoglottis longifolia Ridl.), and based on combined molecular and morphological analyses the genus Apoballis Schott is resurrected. A key to the Schismatoglottideae sensu Wong & Boyce is presented, and Hestia is illustrated.


Wong S.Y.,University Malaysia Sarawak | Wong S.Y.,Universiti Sains Malaysia | Boyce P.C.,The Office of Forest and Plant Conservation Research
Botanical Studies | Year: 2010

A new genus, Ooia S.Y. Wong & P.C. Boyce is erected from Piptospatha sensu Bogner & Hay with two species: Ooia grabowskii (Engl.) S.Y. Wong & P.C. Boyce and Ooia kinabaluensis S.Y. Wong & P.C. Boyce. Ooia is unique in the Tribe Schismatoglottideae owing to the persistence of the entire spadix axis through to fruit maturation and dispersal, with the entire axis remaining fresh and the non-female flowers sloughing away. Species of Piptospatha sensu Wong & Boyce are here delimitated to include only the Elongata Group, which as defined by Bogner & Hay includes the type species, Piptospatha insignis N.E. Br., but which is known only from the type, itself of imprecise origin.


Wong S.Y.,University Malaysia Sarawak | Wong S.Y.,Universiti Sains Malaysia | Boyce P.C.,The Office of Forest and Plant Conservation Research | Sofiman bin Othman A.,Universiti Sains Malaysia | Pin L.C.,University Malaysia Sarawak
Taxon | Year: 2010

Tribe Schismatoglottideae comprises one large genus, Schismatoglottis, and six small 'satellite' genera. A combined molecular phylogenetic analysis of matK, the 3′ portion of the trnK intron, and trnL-F sequence data was carried out on 77 taxa representing all genera in the tribe, all informal groups in Schismatoglottis, together with sister tribe Cryptocoryneae, and outgroups from Araceae. Analyses of combined datasets with parsimony, maximum likelihood, and Bayesian methods revealed tribe Schismatoglottideae to be a polyphyletic assemblage. Neotropical Schismatoglottis is shown to be sister to the palaeotropical Schismatoglottideae + Cryptocoryneae. Schismatoglottis acuminatissima is a sister clade to the rest of the Schismatoglottideae. Palaeotropical Schismatoglottis is unsupported as a monophyletic genus. A new neotropical tribe of Araceae, Philonotieae S.Y. Wong & P.C. Boyce, sister to Cryptocoryneae + palaeotropical Schismatoglottideae, is proposed.

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