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| Registros recuperados: 24 | |
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| Wilde, W.J.J.O. de; Duyfjes, B.E.E.. |
| The genus Gynostemma is represented in Thailand and Malesia by four species of which the extremely variable G. pentaphyllum is widespread covering the whole area. Seven forms are recognized in G. pentaphyllum, of which three are new: forma fasciculare W.J. de Wilde & Duyfjes, forma grandiflorum W.J. de Wilde & Duyfjes, forma knemandrum W.J. de Wilde & Duyfjes, and three are new combinations: forma dasycarpum (C.Y. Wu) W.J. de Wilde & Duyfjes, forma pubescens (Gagnep.) W.J. de Wilde & Duyfjes, and forma simplicifolium (Blume) W.J. de Wilde & Duyfjes. Two new species, both endemic to New Guinea, are described: G. intermedium W.J. de Wilde & Duyfjes and G. papuanum W.J. de Wilde & Duyfjes. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cucurbitaceae; Gynostemma; South East Asia. |
| Ano: 2007 |
URL: http://www.repository.naturalis.nl/record/525346 |
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| Wilde, W.J.J.O. de; Duyfjes, B.E.E.. |
| The genus Zehneria Endl. is split into 5 genera, of which 4 are new: Indomelothria, Neoachmandra, Scopella, and Urceodiscus. Apart from several new combinations and taxa of subspecific rank, the following species are described as new: I. chlorocarpa, N. backeri, N. lancifolia, N. macrantha, N. nesophila, N. platysperma, U. arfakensis, U. carrii, U. hippocrepicus, U. parviflora, U. scabridula, U. viridis, Z. elbertii, Z. erythrobacca, Z. immarginata, Z. neocaledonica, Z. pedicellata, Z. pisifera, Z. tahitensis, and Z. trullifolia. The New World genus Melothria was introduced in Asia where it is represented by one species, M. pendula L. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cucurbitaceae; Zehneria; SE Asia; New genera. |
| Ano: 2006 |
URL: http://www.repository.naturalis.nl/record/526004 |
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| Wilde, W.J.J.O. de; Duyfjes, B.E.E.. |
| A concise history of the botanical collecting and abbreviated reports of the exploration tours by C.G.G.J. van Steenis and De Wilde & Duyfjes in the Gunung Leuser Park and vicinity, northern Sumatra (mainly Aceh Province) is given. This shows that essential areas of the Park, e.g. at the West side, are still botanically unknown. The remarkable achievements in field work by Van Steenis are recorded. The detailed descriptions of the itineraries give a good impression of the constitution and botanical conditions of the terrains of the interior and will be useful for the logistics of future exploration efforts in this difficult and unsurveyable area. The amount of botanical collecting done in the various vegetation types traversed is indicated. The... |
| Tipo: Article / Letter to the editor |
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| Ano: 1994 |
URL: http://www.repository.naturalis.nl/record/533476 |
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| Wilde, W.J.J.O. de; Duyfjes, B.E.E.. |
| ‘Blang’ is the Gayo name for the extensive, open, grassy, lowland savanna land of their area in Aceh, N Sumatra. By analogy, the open areas with heath-like vegetation high in the mountains are called ‘mountain blang’. There are two somewhat intergrading types: a wet and a dry one. They are believed to have been caused by regularly burning since immemorial times by hunters, but our explanation is that they have (at least largely) developed for edaphic reasons, i.e. are due to prevailing climatic conditions on very poor, leached-out and almost impermeable kaolinitic soils. Their extension was possibly enlarged by occasional frost and burning, which may account for the sometimes, but not at all always, sharp demarcation with the surrounding stunted forest.... |
| Tipo: Article / Letter to the editor |
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| Ano: 2001 |
URL: http://www.repository.naturalis.nl/record/533169 |
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| Wilde, W.J.J.O. de; Duyfjes, B.E.E.. |
| The genus Solena Lour. is redefined, and its 3 species and 1 subspecies are keyed out and described: S. amplexicaulis occurs in S India, S. heterophylla, with 2 subspecies is widespread, but does not occur in S India, and S. umbellata (Klein ex Willd.) W.J. de Wilde & Duyfjes, comb. nov., occurs in S India and Sri Lanka. The status of S. heterophylla subsp. napaulensis (Ser.) W.J. de Wilde & Duyfjes, comb. & stat. nov. needs further study as this subspecies is very similar to the more widespread subsp. heterophylla, but it is distinct by sigmoid thecae. Solena amplexicaulis is taxonomically more distinct from the other two species of Solena. In southern India Kedrostis foetidissima much resembles Solena in general habit, especially by the more... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cucurbitaceae; Solena; SE Asia. |
| Ano: 2004 |
URL: http://www.repository.naturalis.nl/record/525943 |
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| Wilde, W.J.J.O. de; Duyfjes, B.E.E.. |
| Contains a taxonomic revision of Lythraceae for Malesia, i.e. the area covering the countries Indonesia, East Timor, Malaysia, Singapore, Brunei Darussalam, The Philippines, and Papua New Guinea. Lythraceae, with in Malesia 11 genera, is a well-defined family with the exception of the morphologically deviating Trapa. The largest native genus is Lagerstroemia with 14 species, followed by the (sub)tropical genera Ammannia (7 species) and Rotala (8 species) and the native genera Lawsonia, Pemphis, and Woodfordia (all with 1 species). The genus Cuphea is represented by 6 introduced species of which some are naturalised. The genera Duabanga and Sonneratia (both formerly Sonneratiaceae), Punica (formerly Punicaceae), and Trapa (formerly Trapaceae) are only... |
| Tipo: Article / Letter to the editor |
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| Ano: 2016 |
URL: http://www.repository.naturalis.nl/record/640474 |
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| Wilde, W.J.J.O. de; Duyfjes, B.E.E.. |
| In Malesia there are 37 genera, of which 29 are native. The largest native genus is Trichosanthes with 43 species, followed by Pilogyne (with 14 species), Neoachmandra (with 12 species), Momordica, Neoalsomitra, Urceodiscus (with 6 species each), Gymnopetalum, Gynostemma, Kedrostis, Mukia (with 3 species each), Indomelothria, Scopellaria, Thladiantha (with 2 species each), and Alsomitra, Anangia, Baijiania, Bayabusua, Benincasa, Borneosicyos, Coccinia, Diplocyclos, Gomphogyne, Hodgsonia, Luffa, Muellerargia, Papuasicyos, Siraitia, Solena, Zanonia (with 1 species each). Altogether there are 121 native species in Malesia, comprising 152 taxa when one includes infraspecific taxa. Cultivated and frequently running wild are Citrullus, Cyclanthera, Lagenaria,... |
| Tipo: Article / Letter to the editor |
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| Ano: 2010 |
URL: http://www.repository.naturalis.nl/record/579350 |
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| Wilde, W.J.J.O. de; Duyfjes, B.E.E.. |
| Alangium sect. Rhytidandra is confined to SE Asia, the Pacific and East Australia, and contains 13 species. Five species, viz. Alangium brassii, A. glabrum, A. gracile, A. guadalcanalense, and A. velutinum are described as new, whereas A. villosum subsp. solomonense is raised to specific rank: A. solomonense. Subspecies tomentosum formerly in A. villosum is transferred to another species and has become A. polyosmoides subsp. tomentosum. Finally Iodes ferruginea, described in Icacinaceae appeared to belong in Alangiaceae, and as the name ferruginea was occupied in Alangium it is changed into A. strigosum, nom. nov. A key to the species is presented, and the concerned taxa are enumerated, referenced, described, and two are figured. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Alangiaceae; Alangium sect. Rhytidandra; Australia; New species; Pacific; SE Asia; Taxonomy. |
| Ano: 2017 |
URL: http://www.repository.naturalis.nl/record/627811 |
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| Wilde, W.J.J.O. de; Duyfjes, B.E.E.. |
| Alangium Lam. sect. Conostigma Bloemb. is largely confined to the Malesian area and contains 19 species. By using the characters as found in the original species-descriptions, and with emphasizing the nature of the indument of the leaf bud, the confusingly variable Alangium javanicum s.l.-complex could be dismantled for a great part. Four new species: A. ledermannii, A. pallens, A. plumbeum, and A. subcordatum, and two new varieties: A. meyeri var. macilentum and A. ebenaceum var. insignis are recognised. Two taxa are raised to specific status: A. nobile subsp. denudatum to A. denudatum and A. javanicum var. minahassicum to A. minahassicum. A key to the species is presented, and the concerned taxa are enumerated, referenced, described and some are figured. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Alangiaceae; Alangium sect. Conostigma; Malesia; New species; Taxonomy. |
| Ano: 2017 |
URL: http://www.repository.naturalis.nl/record/624255 |
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| Registros recuperados: 24 | |
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