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| Registros recuperados: 99 | |
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| Slik, J.W.F.; Welzen, P.C. van. |
| Mallotus sections Hancea and Stylanthus from Malesia are revised. Descriptions, distribution ranges, habit drawings and keys to all the species in these two sections are provided. The diagnostic characters for the sections are discussed briefly in the section headings. Mallotus section Hancea is defined more precisely than before, resulting in the exclusion of 4 species from this section (M. brachythyrsus, M. havilandii, M. insularum (new rank) and M. miquelianus). Mallotus beccarii is synonymised with M. brachythyrsus, and M. tenuipes with M. penangensis. This section contains 12 species. In Mallotus section Stylanthus, M. oblongifolius is synonymised with M. peltatus. This section contains 6 species. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Mallotus; Section Hancea; Section Stylanthus; Malesia; Taxonomy. |
| Ano: 2001 |
URL: http://www.repository.naturalis.nl/record/525368 |
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| Sierra, S.E.C.; Aparicio, M.; Gebraad, M.J.H.; Kulju, K.K.M.; Welzen, P.C. van. |
| The range of diagnostic morphological features in the whole genus Mallotus is reviewed as background to the taxonomic treatment of section Rottleropsis s.l. Special emphasis is given to the indumentum, habit, stipules, leaves, extrafloral nectaries, domatia, inflorescences, flowers, pollen and fruits. Notes on the geographical distribution, ecology, pollinators, fruit and seed dispersal, and uses of the genus are also presented. The section Axenfeldia is reduced to sect. Rottleropsis on account of the absence of suitable morphological characters to distinguish them. A taxonomic revision of 38 species of sect. Rottleropsis s.l. from Malesia, Thailand and Africa is presented, together with regional and synoptical identification keys, distribution maps and... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Euphorbiaceae; Axenfeldia; Mallotus; Rottleropsis; Malesia; Thailand; Africa. |
| Ano: 2007 |
URL: http://www.repository.naturalis.nl/record/524640 |
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| Welzen, P.C. van; Slik, J.W.F.. |
| Distribution patterns or the recognition of phytogeographical areas is usually based on the presence and absence of species. The taxa on which the analyses are based remain virtually anonymous. Here we want to determine which Malesian plant families (within the sample) are responsible for species richness and composition patterns. The other aim is to determine whether the different islands groups in Southeast Asia can be grouped into separate phytogeographical areas. A Principal Coordinates Analysis (PCO) showed the presence of three phytogeographical areas within Malesia: The Sunda Shelf (Malay Peninsula, Sumatra, Borneo) in the west, the Sahul Shelf (New Guinea) in the east, and all remaining central areas forming Wallacea. The latter can be divided into... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Floristic patterns; Malay Archipelago; Malesia; PCO; Plant families; Species richness. |
| Ano: 2009 |
URL: http://www.repository.naturalis.nl/record/525639 |
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| Kulju, K.K.M.; Sierra, S.E.C.; Welzen, P.C. van. |
| A recent molecular phylogenetic study of Mallotus and related genera showed that three small Asiatic genera are clearly part of a strongly supported main Mallotus clade (Mallotus s.s. clade), rendering the genus paraphyletic. In this paper these genera, Neotrewia, Octospermum and Trewia, are merged with Mallotus. The monotypic Neotrewia and Octospermum were originally described within Mallotus and are now transferred back to it. Trewia was never included in Mallotus; it has two distinct species, for which new combinations within Mallotus are made. A full taxonomic treatment with descriptions, distribution maps and drawings is given for the species transferred, and a new generic description for Mallotus is provided. The morphology of the newly transferred... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Rottlerinae; Mallotus; Neotrewia; Octospermum; Trewia; Malesia; Taxonomy. |
| Ano: 2007 |
URL: http://www.repository.naturalis.nl/record/524934 |
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| Welzen, P.C. van. |
| Fourteen species of Sauropus are recognised for Malesia, 21 for Thailand. Two species are described as new, S. asymmetricus of Sumatra and S. shawii of Borneo. Many new synonyms, especially for S. androgynus and S. rhamnoides, are provided. The latter two species have a much wider distribution than described before and both are difficult to separate from each other. A phylogeny based on morphological and palynological data proved futile, but showed that Sauropus together with Breynia and Glochidion are embedded in the paraphyletic Phyllanthus. Most species which formerly belonged to Synostemon and are now included in Sauropus are probably, with the exception of S. bacciformis, related to Breynia and Glochidion. Because of the poor phylogenetic results the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Euphorbiaceae; Sauropus; Synostemon; Malesia; Thailand. |
| Ano: 2003 |
URL: http://www.repository.naturalis.nl/record/525088 |
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| Kiew, Ruth. |
| New combinations under Chionanthus L. are made for Linociera beccarii, L. brassii, L. gigas, L. clementis, L. hahlii, L. kajewskii, L. nitida, L. remotinervia, L. riparia, L. rupicola, L. sessiliflora L. salicifolia, and L. stenura. Linociera cumingiana is synonymous with C. ramiflorus, L. novoguineensis and L. ovalis with C. rupicolus, L. papuasica with C. sessiliflorus and L. pubipaniculata with C. mala-elengi subsp. terniflorus. Linociera macrophylla sensu Whitmore proves to be C. hahlii. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Malesia; Chionanthus; Oleaceae. |
| Ano: 1998 |
URL: http://www.repository.naturalis.nl/record/525202 |
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| Adema, F.. |
| Derris Lour. is revised for the Flora Malesiana region. In the introduction comments are given on some characters and the seedlings of D. trifoliata Lour. are described. The introduction is followed by a section ‘Notes on species’ in which the varieties of D. elegans Graham ex Benth. are described, including a new one from Celebes (var. celebica Adema) and a new one from Malaysia, Java, Borneo, the Philippines and the Moluccas (var. korthalsiana (Blume ex Miq.) Adema). Several other species are discussed at some length. A key to the species of Derris in Malesia is presented. The paper concludes with notes on aberrant specimens and excluded species. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Derris; Malesia; New varieties; Seedlings. |
| Ano: 2003 |
URL: http://www.repository.naturalis.nl/record/526182 |
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| Esser, Hans-Joachim. |
| The Hippomaneae (Euphorbiaceae) are revised for Malesia. Only Excoecaria and Homalanthus are excluded. A key to all Malesian genera is provided. The generic concepts applied differ markedly from previous treatments for the region with the following genera accepted: Balakata, Falconeria, Gymnanthes, Microstachys, Sapium, Shirakiopsis, Stillingia and Triadica. All of these genera show peculiarities in biogeography and ecology, which are discussed. Among these genera only Stillingia is kept as traditionally used. Balakata (based on Sapium sect. Pleurostachya) and Shirakiopsis (based on Sapium sect. Parasapium but excluding its type) are described as new genera; Falconeria, Microstachys and Triadica are re-established as distinct genera having been treated as... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Euphorbiaceae; Hippomaneae; Malesia. |
| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/525910 |
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| Bramley, G.L.C.. |
| Section Dissimiles C.B. Clarke is reviewed. Eleven species are known, one of which is newly described here (C. fulvisericea), and one species is reduced to synonymy (C. producta = C. trisepala). The section is centred on Borneo, with two outlying species in Sumatra and one in Peninsular Malaysia. Section Dissimiles is defined by a unique combination of characters, the most distinctive of these are: a zygomorphic calyx (the upper three lobes are fused to form one but the tips remain free, and the lower two lobes are completely separated to the base); anisophyllous leaf pairs, and a small (generally less than 2 cm long), predominantly white, somewhat translucent corolla. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cyrtandra; Section Dissimiles; Malesia; Taxonomy. |
| Ano: 2005 |
URL: http://www.repository.naturalis.nl/record/525921 |
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| Zhu, H.; Roos, M.C.; Ridsdale, C.E.. |
| Based on herbarium collections, the Malesian species of the genus Lasianthus are revised. A total of 131 species including 5 subspecies and 6 varieties are recognized from the Malesian region, of which 41 species, 3 subspecies and 3 varieties are described as new, and 3 new combinations are made for varieties. 22 species names and 15 variety names are reduced to synonyms. Ten species names and 2 varieties are treated as dubious mainly because their types cannot be traced. Additionally, 11 species are further excluded from Lasianthus. All species are described and a key to Malesian Lasianthus is given. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Lasiantheae; Lasianthus; Malesia; Revision; Rubiaceae. |
| Ano: 2012 |
URL: http://www.repository.naturalis.nl/record/526201 |
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| Registros recuperados: 99 | |
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