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| Wessels Boer, J.G.. |
| It is certainly nothing new to state that palm taxonomy is still in a rather poor condition, despite the work of so many specialists. Linnaeus (1753) in his Species Plantarum did not describe any American palm. Soon afterwards a few species were described, e.g. by Jacquin (1763), Gaertner (1788), and Humboldt, Bonpland & Kunth (1816), to mention only a few authors of species occurring in Suriname. |
| Tipo: Article / Letter to the editor |
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| Ano: 1965 |
URL: http://www.repository.naturalis.nl/record/534729 |
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| Punt, W.; Wessels Boer, J.G.. |
| In a previous palynological study in Cocoid palms the present authors (Punt and Wessels Boer, 1966) were able to demonstrate a rather strong but not absolute correlation between the pollen types and the staminate flower types within the genus Attalea in the broad sense. The existence of partly apparently primitive, partly very advanced flower types within the otherwise close related group of Geonomoid palms made it worthwhile to investigate the same feature in this group. The Geonomoid palms are usually considered to comprise 7-9 genera of monoecious Arecoid palms which share a large number of characteristics (Burret, 1930; Moore, 1966). The group is very obviously a most natural one. The generic distinctions are mainly based on the flower morphology,... |
| Tipo: Article / Letter to the editor |
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| Ano: 1966 |
URL: http://www.repository.naturalis.nl/record/534922 |
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| Wessels Boer, J.G.. |
| From the many misidentifications in herbaria and the contradictions between the descriptions of many authors it became evident that the species of Trichomanes included by Desvaux, Presl, van den Bosch and Copeland under the generic name Didymoglossum and those included by Presl, van den Bosch and Copeland under the name Microgonium were particularly poorly understood. A complete revision of this group has never been undertaken. LINDMAN’s paper (1903) is incomplete, being based only on the study of about 30 herbarium sheets; moreover, his conclusions are based on misinterpretation of several species. The treatments in local floras, as, e.g. STURM’s (1859) and MAXON’s (1926) are very good, but only a small number of species are involved. The name... |
| Tipo: Article / Letter to the editor |
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| Ano: 1962 |
URL: http://www.repository.naturalis.nl/record/535184 |
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| Punt, W.; Wessels Boer, J.G.. |
| Because the palm family is almost entirely tropical with many species of a very great size, it has attracted only a few botanists to study them. As a consequence palms are poorly represented in herbaria and little understood in almost every respect. Notably their taxonomy is in a very poor condition since many taxa are described on inadequate material which allows only an arbitrary interpretation and, moreover, the family is grossly overnamed. Hence the second author (1965) proposed a large-scale lumping in his critical treatment of the Suriname palms. The present paper is intended to give some palynological evidence to support a few of these lumpings on the generic level. Palynological evidence shall especially be rewarding in the genus Attalea in the... |
| Tipo: Article / Letter to the editor |
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| Ano: 1967 |
URL: http://www.repository.naturalis.nl/record/535031 |
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| Burger, W.C.; Lanjouw, J.; Wessels Boer, J.G.. |
| The genus Sorocea was established by AUG. DE SAINT HILAIRE (1821) in a study about the unequality of the cotyledons but he did not describe a species nor did he cite specimens. GAUDICHAUD’s study (1844) gives only figures not accompanied by descriptions. The first publication with well-described and illustrated species of which the type-specimen is also well-perserved is MIQUEL’s treatment (1853) in Martius Flora Brasiliensis. Balanostreblus, described and figured by KURZ (1873) is known only from a cultivated specimen in the Calcutta herbarium and is undoubtedly conspecific with Sorocea guilliminiana. Three of the four Pseudosorocea species described by BAILLON (1875) belong also to Sorocea. |
| Tipo: Article / Letter to the editor |
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| Ano: 1962 |
URL: http://www.repository.naturalis.nl/record/534832 |
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| Wessels Boer, J.G.. |
| Tomlinson has suggested (1961) that the palm-collector is a somewhat quixotic character. This statement is illustrated by a quotation from Bailey: “to procure material of the great palms is like setting forth to collect a windmill except that one does not have the advantage of steps built on the derrick”. In general, indeed, palms are unattractive to collect and to handle in the herbarium. The tribe of the Geonomoid palms, however, represents a rather pleasant exception being a group of unarmed and mostly rather small plants with often arundinaceous stems up to a few meters tall. Consequently they are more frequently collected and studied than other palms resulting in a large number of collections and publications. The first author dealing with these palms... |
| Tipo: Article / Letter to the editor |
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| Ano: 1968 |
URL: http://www.repository.naturalis.nl/record/535163 |
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