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| Leeuwenberg, A.J.M.. |
| When studying the Gesneriaceae of Guiana (1958) the present author saw a fairly considerable number of misidentified and unnamed specimens some of which proved to belong to undescribed species. Several of the latter are described below. Besides, several of the species he met with, had to be transferred to other genera. New combinations, however, were made only in those cases where the author could examine the type. |
| Tipo: Article / Letter to the editor |
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| Ano: 1959 |
URL: http://www.repository.naturalis.nl/record/535010 |
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| Geesink, R.; Leeuwenberg, A.J.M.; Ridsdale, C.E.; Veldkamp, J.F.. |
| For the identification of a flowering plant the first step usually is to discover to which family it belongs. With some experience, the families commonly encountered in one’s area of interest are soon known, but when dealing with specimens from other places, notably those from the vast and rich subtropics and tropics, there is much less certainty. The pertinent literature is often not readily available as it is often found only in expensive, rare or obscure books, or journals, present only in a few specialized institutes. Basically only a few keys to the families of flowering plants of the world have ever been produced, the best known of which at present is Hutchinson’s Key to the families of flowering plants (1973); less well-known are Lemée’s Tableau... |
| Tipo: Article / Letter to the editor |
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| Ano: 1981 |
URL: http://www.repository.naturalis.nl/record/508216 |
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| Leeuwenberg, A.J.M.. |
| The present study was started as a revision of the Gesneriaceae of Suriname (Dutch Guiana). As it proved to be impossible to solve the taxonomic problems on the base of the scanty material from that country only and as the region of the three Guianas inclusive of the Brazilian territory “Amapá” and the Venezuelan “Delta Amacuro” turned out to be a sufficiently natural floristic unit, the author decided to extend his investigations to all Gesneriaceae known from that area. Of those species material of many herbaria was studied in order to obtain a more complete impression of individual variation and geographical distribution. Among the material borrowed for this purpose the author came across misidentified (and unnamed) specimens some of which belonged to... |
| Tipo: Article / Letter to the editor |
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| Ano: 1958 |
URL: http://www.repository.naturalis.nl/record/534724 |
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