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| Registros recuperados: 56 | |
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| Adema, F.; Mennema, J.. |
| Op p. 27 van deze aflevering stelt E.J. Weeda onder meer, dat de voorjaarssoorten in de in 1980 afgesloten tweede inventarisatieronde vaak onvolledig zijn ‘gehokt’. Dit is voor ons aanleiding geweest om de gebruikelijke zaterdagexcursies, georganiseerd door het Rijksherbarium en de Commissie voor het Floristisch Onderzoek van Nederland van de Koninklijke Nederlandse Botanische Vereniging, dit jaar eerder te starten dan in voorgaande jaren en speciale aandacht te wijden aan de voorjaarsflora. De overige zaterdagexcursies zullen in 1982 vooral daar worden gehouden, waar aanvullende gegevens node worden ontbeerd. De excursies zijn toegankelijk voor een ieder die belangstelling heeft in de Nederlandse floristiek. Zij worden gehouden op: datum plaats van... |
| Tipo: Article / Letter to the editor |
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| Ano: 1982 |
URL: http://www.repository.naturalis.nl/record/527701 |
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| Adema, F.. |
| The subdivision of the genus as proposed by Chodat in his Monograph of the family, seventy five years ago, needs emendation. First, one of his sections, Semeiocardium (Zoll.) Hassk. must be completely reconstructed. It is typified by a singular genus Semeiocardium occurring in Madura and Kangean Is. (off NE. Java) which was described by Zollinger as a Balsaminacea, but included by Hasskarl in the Polygalaceae, in which he was followed by Chodat. Backer has indubitably shown that Zollinger’s opinion was correct and that it represents a remarkable, endemic genus of the Balsaminaceae (Gard. Bull. Str. Settl. 9, 1935, 70). For the other species included in this section a new section must be accepted which I have named Pseudosemeiocardium. Furthermore, through... |
| Tipo: Article / Letter to the editor |
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| Ano: 1966 |
URL: http://www.repository.naturalis.nl/record/526139 |
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| Mennema, J.; Adema, F.. |
| Simon Jan van Ooststroom, who passed away on the 28th of September 1982 at the age of 76, was the founder of Gorteria and the first professional botanist working on the Netherlands flora. He revised 14 editions of the 'Flora van Nederland', both in its illustrated and concise form. For a long period he was the Secretary of the Editorial Committee for the Flora Neerlandica. Together with Th.J. Reichgelt Van Ooststroom revised 25 families, and by himself 10 families for this standard work. His biography written by Maas Geesteranus (1971) and Van Steenis (1971) on the occasion of his retirement as Head of the Department of the Netherlands Flora has been complemented here with additional data. |
| Tipo: Article / Letter to the editor |
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| Ano: 1983 |
URL: http://www.repository.naturalis.nl/record/527217 |
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| Balgooy, M.M.J. van; Lowry II, P.P.; Philipson, W.R.; Coode, M.J.E.; Nielsen, I.; Dransfield, J.; Meijden, R. van der; Schrader, T.; Adema, F.; Welzen, P.C. van. |
| Name: Alseuosmiaceae Airy Shaw, Kew Bull. 18 (1965) 249. Family: Alseuosmiaceae. |
| Tipo: Article / Letter to the editor |
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| Ano: 1993 |
URL: http://www.repository.naturalis.nl/record/509475 |
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| Adema, F.; Mennema, J.. |
| The common Rice grass in the Netherlands proved to be Spartina anglica C. E. Hubbard instead of S. x townsendii H. & J. Groves as has been cited in Dutch literature. In less than 55 years after its introduction in 1924 S. anglica succeeded in almost completely crowding out the original S. maritima (Curt.) Fern. According to C. E. Hubbard, who kindly revised several of our specimens, only 4 collections belong to the hybrid S. x townsendii, 2 to a triple-hybrid? S. anglica x (S. x townsendii) and one to an unknown Spartina-hybrid. |
| Tipo: Article / Letter to the editor |
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| Ano: 1979 |
URL: http://www.repository.naturalis.nl/record/526989 |
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| Adema, F.. |
| The commodity group Exudates (defined as the fluids that ooze out of a wound of a tree) is divided into three groups of substances: Resins, Latex, and Gums. Resins, usually mixes of terpenes, are primarily used in paints and varnishes. Latex, of which the most important is rubber, is used in car tyres, engineering components and consumers goods, including chewing gum. The main components of latex are polyisoprenes and resins. Vegetable gums consist of mixtures of polysaccharides and are often used in cosmetics, soaps, and in food products as stabiliser or emulsifier. For the field botanist exudate is a useful character. However, this use is not mentioned in the PROSEA volume. The introduction, where the properties of the exudates are discussed, is followed... |
| Tipo: Article / Letter to the editor |
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| Ano: 2001 |
URL: http://www.repository.naturalis.nl/record/524658 |
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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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| Adema, F.. |
| The author discusses the occurrence of three species of Aster: A. lanceolatus Willd., A. salignus Wildd. and A. tradescantii L. In the Netherlands it is possible, contrary to the views of P.F. Yeo in Flora Europaea4, to recognise A. tradescantii as a species separate from A. lanceolatus. The Netherlands material of A. tradescantii resembles American material of this species. An extensive description of the Netherlands material is in good accordance with descriptions in American flora's. Also, determination of this material with American flora's never gives serious problems. A. salignus does not occur in the Netherlands. In the material formerly identified on this species there are two types of specimens. The specimens with a rusty coloured pappus belong to... |
| Tipo: Article / Letter to the editor |
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| Ano: 1983 |
URL: http://www.repository.naturalis.nl/record/526422 |
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| Mennema, J.; Adema, F.. |
| In een kort tijdsbestek heeft floristisch Nederland twee prominenten verloren: op 1 februari j.l. overleed op 86-jarige leeftijd te Bergen op Zoom Jan G. Sloff, op 12 maart j.l. op 61-jarige leeftijd te Groningen Prof. Dr. D. Bakker. De verdiensten van beiden voor de Nederlandse floristiek zijn eigenlijk te veel omvattend om in deze beperkte ruimte naar behoren gestalte te geven. De naam van Jan G. Sloff zal onverbrekelijk verbonden blijven met het IVON (Instituut voor het Vegetatieonderzoek van Nederland). Als vertegenwoordiger van de Kon. Ned. Botanische Vereniging was hij in 1930 mede-oprichter om in 1933 tot secretaris van dit instituut te worden benoemd. In die functie heeft hij onvoorstelbaar veel werk verzet in de vorm van het inventariseren van de... |
| Tipo: Article / Letter to the editor |
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| Ano: 1979 |
URL: http://www.repository.naturalis.nl/record/526741 |
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| Adema, F.; Mennema, J.. |
| Seseli montanum L., an umbelliferous species, mainly occurring in the southern part of Europe, has been found in 1959 along the river Meuse near Maastricht in the southernmost part of the Netherlands. It is remarkable that no records of this species are available from Belgium. The disjunct distribution of the species, being found in the North of France and in the Netherlands probably may be attributed to the preference of the species for soils of loose consistancy found on the Cretaceous and Jurassic limestones. |
| Tipo: Article / Letter to the editor |
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| Ano: 1976 |
URL: http://www.repository.naturalis.nl/record/526540 |
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| Mennema, J.; Adema, F.. |
| Hoewel mag worden gehoopt, dat de lezer daarvan niets of heel weinig zal merken, wijkt deel 10 in vele opzichten af van de vorige delen van Gorteria. In de eerste plaats hebben wij gemeend om diverse redenen naar een andere drukker uit te moeten zien. Dit zal zowel op het uiterlijk van het tijdschrift als op de inhoud van weinig invloed zijn. Wel vonden wij er aanleiding in om een boom, die hoe langer hoe dikker werd, te kappen: de opsomming op de titelpagina van de acht instituten, waarvan de medewerkers volgens een bepaalde afspraak in Gorteria kunnen publiceren. De afspraak zelf is onveranderd gebleven. |
| Tipo: Article / Letter to the editor |
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| Ano: 1980 |
URL: http://www.repository.naturalis.nl/record/527038 |
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| Wiriadinata, H.; Ohashi, H.; Adema, F.. |
| The genus Mucuna is revised for the Flora Malesiana region. Several characters are discussed in some detail. The subdivision of the genus is discussed. We accept two subgenera: subg. Mucuna and subg. Stizolobium. Several groups of species showing similarity in some characters are discussed. A description of the genus is presented, two keys to the species are given. The main part of the paper consists of an enumeration of the species including descriptions of new species: three byAdema (M. angustifolia, M. eurylamellata, M. kabaenensis) and four by Wiriadinata (M. aimun, M. havilandii, M. sakapipei, M. verdcourtii). Neotypes are designated for M. diabolica and M. novo-guineensis. Mucuna pachycarpa Parreno is validated.Asubspecies of M. pruriens, subsp.... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Fabaceae; Malesia; Mucuna. |
| Ano: 2016 |
URL: http://www.repository.naturalis.nl/record/613713 |
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| Mennema, J.; Griffioen, H.; Veer, R. van’t; Adema, F.. |
| Nieuws over de zeelathyrus, Lathyrus japonicus Willd. subsp. maritimus (L.) P. W. Ball. De voorspelling van J. K. Schendelaar in Natura 73 (4), 1976, p. 98, dat Texel een goede kans maakt om de eerste bloeiende zeelathyrus te begroeten, is inderdaad uitgekomen. Mej. W. Eelman (Den Burg) bericht ons, dat de plant in 1978 op Texel heeft gebloeid. J. A. de Kramer (Haarlem) heeft L. japonicus subsp. maritimus op een nieuwe vindplaats aangetroffen: op het „Groene strand” bij de Zuidpier te IJmuiden, op 26 augustus en 2 september 1979. Een gedeelte van het niet-bloeiende exemplaar werd ter verificatie naar het Rijksherbarium gezonden. |
| Tipo: Article / Letter to the editor |
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| Ano: 1980 |
URL: http://www.repository.naturalis.nl/record/526636 |
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| Maesen, L.J.G. van der; Balgooy, M.M.J. van; Adema, F.; Keßler, P.J.A.. |
| A joint project of the National Herbarium, Addis Ababa University, and the Department of Systematic Botany, Uppsala University, the Ethiopian Flora Project that was launched in 1980, continues to produce results since the first volume (in fact Vol. 3) was published. Many efforts have gone into fund raising, and SIDA, the Swedish International Development Cooperation (earlier SAREC), and the Ethiopian Government have contributed considerable sums of money to achieve the publication of the Flora of Ethiopia and Eritrea. The editorial team in Uppsala, Addis Ababa and Eritrea has to be congratulated that within two years after the appearance of both volumes of 1995 another issue has left the press. In this extremely rich flora region, with altitudes ranging... |
| Tipo: Article / Letter to the editor |
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| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/524674 |
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| Registros recuperados: 56 | |
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