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| Bouman, R.W.; Keβler, P.J.A.; Telford, I.R.H.; Bruhl, J.J.; Welzen, P.C. van. |
| Over two centuries of taxonomic studies on the species rich genus Phyllanthus have culminated in a broad and complicated classification with many subgenera and (sub)sections. Past taxonomic work has only focused on local revisions, mostly because of the size of the genus. In this study we aim to summarize most of the taxonomic work in a list containing the infrageneric delimitations of Phyllanthus. This work will serve as a reference, placing most currently recognized species in subgenera and if possible, in sections for further study. Here we recognize 880 species of Phyllanthus, classified in 18 subgenera, 70 sections and 14 subsections. A few taxonomic changes are necessary to reconcile published phylogenetic data with the current classification.... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Infrageneric taxonomy; Pantropical; Paraphyletic; Phyllanthaceae; Phyllanthus. |
| Ano: 2018 |
URL: http://www.repository.naturalis.nl/record/670219 |
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| Welzen, P.C. van. |
| Dicoelia was always considered to be a monotypic genus. Typical are the hooded (cucullate) petals that form cavities in which juvenile thecae of adjacent stamens are protected. Specimens of Sumatra appear to represent a new species. The Sumatran specimens have stipules that fall slightly later and they show morphological differences in the pistillate petals, pistillode, columella and hilum. Newly described structures are disc glands (thought to be absent), probably not functional, but present in the flowers of both sexes and a gynophore in the pistillate flowers. Dicoelia is considered as a member of the Phyllanthaceae conforming with the latest molecular phylogenetic results; a classification that agrees with the presence of two ovules per locule. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Dicoelia; Disc glands; Euphorbiaceae; Gynophore; Malesia; Phyllanthaceae. |
| Ano: 2011 |
URL: http://www.repository.naturalis.nl/record/524830 |
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| Heijkoop, M.; Welzen, P.C. van. |
| The genus Actephila (Phyllanthaceae) is distributed from India in the north-west to Thailand and via Malesia to the Melanesian Islands and Australia in the south-east. Eleven species are recognized of which three are newly described, A. discoidea with long leaf apices and a fleshy nectar discs, A. emarginata with an emarginate leaf base, and A. stipularis with large stipules. Further, A. javanica is synonymized with A. excelsa; and a former synonym or separate variety, A. excelsa var. acuminata, is recognized as distinct species, but had to be synonymized under A. subsessilis. Actephila puberula, not present in Malesia, but often synonymized with A. excelsa, is kept separate because of the hairy ovary and different base of the leaf blades. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Actephila; Asia; Malesia; Phyllanthaceae; Revision; Taxonomy. |
| Ano: 2017 |
URL: http://www.repository.naturalis.nl/record/623378 |
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