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| Registros recuperados: 123 | |
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| Veldkamp, J.F.. |
| In 1759 Linnaeus described an American species under Gentiana, as G. verticillata. In 1781 his son recorded (Suppl. 174) a specimen from India leg. D. D. Fabricius under the same name, without reference to the earlier G. verticillata, and gave a full description. Whether this was just a new record or whether he really intended to describe a new species, which then involves that he was not aware of the name his father had preoccupied, is difficult to prove. No references were mentioned though he gave these elsewhere under other species described before. Though Index Kewensis did not enter this homonym I am rather convinced that it was intended as a new species, also in connection with the fact that he based the description on an Indian specimen.... |
| Tipo: Article / Letter to the editor |
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| Ano: 1968 |
URL: http://www.repository.naturalis.nl/record/525862 |
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| Valkenburg, Johan L.C.H. van; Balgooy, M.M.J. van; Lemaire, A.J.J.; Veldkamp, J.F.; Adema, Frits. |
| Sustainable forest management is more than limiting harvesting volume of timber in tall forest areas. Reclamation and restoration of depleted forest areas is gaining importance as areas of remaining tall forest are diminishing. Irrespective of the causal factors be it unsustainable logging, mining or forest fires, secondary forest resulting from these activities deserve special attention. In East Kalimantan a wide variety of trees has been used for reforestation of areas affected by the devastating fires of 1982- 1983. These attempts involved exotic as well as indigenous species, and results varied considerably. The 1998 fires that raged through the area sadly destroyed most of the successful trials. Gradually emphasis of reforestation has shifted towards... |
| Tipo: Article / Letter to the editor |
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| Ano: 2000 |
URL: http://www.repository.naturalis.nl/record/524576 |
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| Veldkamp, J.F.; Kreffer, L.A.. |
| Chrysanthellum L.C.M. Rich, (inch Eryngiophyllum Greenm.) is distinguished from Glossocardia Cass. The genera Glossogyne Cass., Guerreroia Merr. and Neuractis Cass. are reduced to Glossocardia. Diodontium F. Muell. from Australia is resurrected, and Glossogyne sect. Trioncinia F. Muell. is raised to generic rank. Three new species are described and several new combinations are proposed. Cosmos calvus sensu Sherff is renamed to Cosmos steenisiae Veldk. |
| Tipo: Article / Letter to the editor |
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| Ano: 1991 |
URL: http://www.repository.naturalis.nl/record/524915 |
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| Veldkamp, J.F.. |
| Dichelachne was established by Endlicher in 1833 to accomodate a species collected by Ferd. Bauer in Norfolk I. Trinius and Ruprccht (1843) revised the genus, adding 6 more species, referring to previously published names, but giving new names as they had no access to the type materials of these. It has appeared that their specific concept was too narrow and in current literature only 4 species are accepted. This number has been reduced here to 3. Some other species have been placed in this genus now and then, but have proved to belong to different genera, as Deyeuxia, Agrostis, Stipa, and Oryzopsis. This shifting of species between quite different genera reflects the instability of the opinion about the taxonomic place of the genus. Some, as Trinius... |
| Tipo: Article / Letter to the editor |
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| Ano: 1974 |
URL: http://www.repository.naturalis.nl/record/524492 |
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| Veldkamp, J.F.. |
| Herbs, sometimes with scaly rhizomes, bulbs, bulbils or stolons, or woody perennials, shrubs, lianas or trees. Leaves penninerved, digitately or pinnately trifoliolate, imparipinnate or paripinnate, basal, alternate, subopposite or apically tufted. Stipules sometimes present. Petioles with basal joint, petiolules articulated. Inflorescences basal, axillary or pseudoterminal, cymose to pseudumbellate, rarely racemose, 1-many-flowered, bracteate and bracteolate. Flowers ♂♀, very rarely also ♂ specimens (Dapania), actinomorphic, 5-merous, hetero-tri-, -di-, or homostylous, sometimes cleistogamous. Pedicels articulate. Sepals imbricate, free or connate at base, sometimes with apical calli (Oxalis), persistent. Petals contort, quincuncial or cochlear, free but... |
| Tipo: Article / Letter to the editor |
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| Ano: 1972 |
URL: http://www.repository.naturalis.nl/record/532609 |
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| Veldkamp, J.F.; Vink, W.; Frodin, D.G.. |
| Collecting localities are of special interest to those who want to know the exact origin of the material under study: e.g. when citing types, designating neotypes, preparing distribution maps, planning expeditions, comparing species lists, or because of some historical interest. It is not always easy to gather these data, especially in the case of many former colonies where geographical names as used on collections have been changed (or may never have been recorded by the authorities and include on maps or in official gazetteers). As we have spent some time to gather the present information, we thought a wider audience might be interested. For a brief period, 1884 to 1921, the northern half of Papua New Guinea was a German colony, and the mainland portion... |
| Tipo: Article / Letter to the editor |
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| Ano: 1988 |
URL: http://www.repository.naturalis.nl/record/533129 |
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| Registros recuperados: 123 | |
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