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	Provedor de dados 16 (37) Autor Hartog, C. den (37) Plas, F. van der (2) Adema, F. (1) Berge Henegouwen, A.L. van (1) Ham, R.W.J.M. van der (1) Kasteel, J. van (1) Ploeg, D.T.E. van der (1) Polderman, P.J.G. (1) Segal, S. (1) Sipkes, C. (1) Swennen, C. (1) Weeda, E.J. (1) Wiegleb, G. (1) Mais... Tipo do documento Article / Letter to the editor (37) Ano 2002 (1) 1994 (1) 1980 (1) 1973 (3) 1972 (3) 1971 (1) 1970 (4) 1968 (3) 1967 (4) 1965 (2) 1964 (2) 1963 (2) 1962 (1) 1959 (3) 1958 (1) 1956 (1) 1955 (2) 1953 (1) 1952 (1) Mais... País Netherlands (37)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 37 Primeira ... 1 2 ... Última Ondinea, a new genus of Nymphaeaceae 16 Hartog, C. den. Among water-plant material received on loan from the Western Australian Herbarium, South Perth, there was a very remarkable Nymphaeacea which did not fit in any of the 8 genera so far described in this family. Mr. R. C. Royce, the curator of the herbarium mentioned above, kindly gave his permission for me to work out this material. Fortimately, additional specimens of this taxon were received on loan from C.S.I.R.O., Canberra, through the kind collaboration of Miss Dr. N. T. Burbidge. Dr. R. C. Bakhuizen van den Brink, Leiden, rendered the diagnosis into Latin. Miss R. van Crevel prepared the drawing. Mr. J. Muller studied the pollen of the plant; his findings are given in an appendix to this paper. Tipo: Article / Letter to the editor Ano: 1970 URL: http://www.repository.naturalis.nl/record/526252 Plasmodiophora maritima, een gal op Triglochin maritima 16 Hartog, C. den. The parasitic fungus Plasmodiophora maritima G. Feldmann, which causes a very characteristic gall on Triglochin maritima L., has been found on the Balgzand salt-marsh near Den Helder. Tipo: Article / Letter to the editor Ano: 1970 URL: http://www.repository.naturalis.nl/record/527104 Range extension of Halophila stipulacea (Hydrocharitaceae) in the Mediterranean 16 Hartog, C. den. Halophila stipulacea (Forsk.) Aschers. is a sea-grass which is widely distributed along the coasts of the western Indian Ocean and the Red Sea. In 1895 Fritsch (Verh. Zool. Bot. Ges. Wien 45, 1895, p. 104) recorded the species from the Island of Rhodos in the Aegean Sea. This was the first record of the species from the Mediterranean. There can be no doubt that it penetrated the Mediterranean via the Suez Canal, which was completed in 1869. Although there are no early records of its occurrence in the Suez Canal, it is significant that it was the only sea-grass found during the exploration of the canal by Munro Fox in the autumn of 1924; at that time it was abundant in several localities in the canal. Forti’s record (Nuov. Giorn. Bot. Ital. 34, 1927, p.... Tipo: Article / Letter to the editor Ano: 1972 URL: http://www.repository.naturalis.nl/record/525017 Disappearance of Chaetogammarus stoerensis (Reid) (Crustacea: Amphipoda) from the coast of the Netherlands 16 Hartog, C. den. Chaetogammarus stoerensis (Reid), formerly known from three localities in The Netherlands, has become extinct owing to habitat destruction. Tipo: Article / Letter to the editor Ano: 1994 URL: http://www.repository.naturalis.nl/record/505265 Fycologische Notities, 1, Sphacelaria plumigera in Zeeland 16 Hartog, C. den. Sphacelaria plumigera Holmes is reported from 8 localities in the province of Zeeland (Netherlands). The differences between this species and S. plumosa Lyngb., with which it has been confounded, are given, and its habitat is described. The species occurs in the upper part of the sublittoral and the lowest part of the eulittoral, and is uncovered only during the spring ebb. It shows a preference for sheltered localities and has been found in the following algal communities: Polysiphonieto-Chaetomorphetum, Codieto-Hypoglossetum, and in the vegetation of Laminaria saccharina. The species is limited to the euhalinicum and does not occur in the brackish waters of the estuaries. Unilocular sporangia have been found in February, March and April. Finally the... Tipo: Article / Letter to the editor Ano: 1962 URL: http://www.repository.naturalis.nl/record/527090 Korte mededelingen 16 Adema, F.; Ham, R.W.J.M. van der; Hartog, C. den; Ploeg, D.T.E. van der; Weeda, E.J.. Een nieuwe desinfectiemethode voor herbaria. Droog organisch materiaal oefent een grote aantrekkingskracht uit op allerlei dierlijke organismen. Gedroogde planten, het herbarium, maken daarop geen uitzondering en worden met graagte door verschillende insektesoorten gegeten. Vooral de z.g. museumkevers worden nogal eens in collecties aangetroffen. Iedereen, die er een herbarium op na houdt, weet, dat regelmatige controle en desinfectie van zijn collectie noodzakelijk zijn. Het controleren van vele, soms duizenden of tienduizenden, exemplaren is een tijdrovend, zij het niet altijd onplezierig karweitje. Het desinfecteren van een collectie kan echter wel onplezierig zijn. Om een herbarium insektenvrij te houden, wordt tot nu toe gewerkt met bepaalde... Tipo: Article / Letter to the editor Ano: 1980 URL: http://www.repository.naturalis.nl/record/528088 Bipalium engeli n. sp., a terrestrial triclad from Singapore 16 Hartog, C. den. A new species of the genus Bipalium, B. engeli, is described from secondary forest in Singapore. It is allied to B. rauchi von Graff, 1899, from the same area, but differs markedly in its colour pattern. Tipo: Article / Letter to the editor Ano: 1968 URL: http://www.repository.naturalis.nl/record/504838 De Nederlandse Ruppia-soorten 16 Hartog, C. den. The genus Ruppia is represented in the Netherlands by two species, R. maritima L. and R. cirrhosu (Petagna) Grande. These species differ not only in morphological and cytogenetical characters, but they also show differences in flowering biology, life-cycle, ecology and geographical distribution. Tipo: Article / Letter to the editor Ano: 1971 URL: http://www.repository.naturalis.nl/record/527046 Some notes on the distribution of Plasmodiophora diplantherae, a parasitic fungus on species of Halodule 16 Hartog, C. den. Plasmodiophora diplantherae (F. & W.) Iv. Cook is a specific parasite on species of the sea-grass genus Halodule. It had been recorded only from its type locality in the West Indies, but from a recent study of extensive herbarium material it has proved to be a widely distributed pantropic species. Tipo: Article / Letter to the editor Ano: 1965 URL: http://www.repository.naturalis.nl/record/531896 The littoral environment of rocky shores as a border between the sea and the land and between the sea and the fresh water 16 Hartog, C. den. Many ecologists have occupied themselves with the problem of the littoral zonation and they still disagree among themselves about the delimitation of the zones and the factors which cause the zonation. In this paper the problem has been approached in two different ways. In the first place the littoral zone sensu lato has been regarded as the border area between the sea and the land. This approach does not result in an explanation of the ‘submergence’ of many eulittoral organisms in the Arctic waters and the Baltic. Secondly the littoral zone sensu lato has been considered as the border zone between the sea and the fresh water, in other words as a brackish environment. This approach gives a reasonable explanation for the ‘submergence’ of littoral organisms... Tipo: Article / Letter to the editor Ano: 1968 URL: http://www.repository.naturalis.nl/record/525977 Plasmodiophora bicaudata, een parasiet op Zostera noltii 16 Hartog, C. den; Polderman, P.J.G.. The parasitic fungus Plasmodiophora bicaudata, which prevents the elongation of the internodes of Zostera noltii and gives the diseased plants a tufted appearance, has been found in three localities in the Netherlands but is obviously very rare. Tipo: Article / Letter to the editor Ano: 1973 URL: http://www.repository.naturalis.nl/record/526770 Halodule emarginata nov. sp., a new sea-gras from Brazil (Potamogetonaceae) 16 Hartog, C. den. Hardly anything is known about the occurrence of sea-grasses along the Atlantic coast of the South American continent. There are a few records from the coasts of Venezuela and Colombia and only two certain records outside the Caribbean area. The Hydrocharitacean Halophila baillonis Aschers. ex Dickie in Hook. f. (sub nomine H. aschersonii Ostenf.) has been collected once, in 1888, near Pernambuco, Brazil (Setchell, 1934). The other record concerns the leaf-blade of a still unidentified Zostera species, washed ashore near Montevideo, Uruguay, in 1934 (Setchell, 1935; den Hartog, 1970, p. 96). Through the kind mediation of Mrs. F. M. Lindeman-Torgo, Utrecht, I received a sea-grass sample from South America. This appeared to consist of an undescribed species... Tipo: Article / Letter to the editor Ano: 1970 URL: http://www.repository.naturalis.nl/record/524586 Over de oecologie van bloeiende Lemna trisulca 16 Hartog, C. den. Flowering Lemna trisulca has been found in three localities in the province of Zeeland. The vegetative plants are completely submerged and do not show any adaptation to aerial life (ricciellids). The fertile plants rise to and drift on the surface, as their fronds contain intracellular air spaces, and stomata are developed (lemnids). The inflorescences are proterandrous. Pollination takes place by direct contact of the stiff curved stamens of the one plant with the short style of an other plant. Contacts are easily made, as wind, water currents and moving animals continually shift the position of the fronds, which usually are densely packed. The species has its optimum in relatively small waters, where it is sheltered from wind- and waveaction, and where... Tipo: Article / Letter to the editor Ano: 1964 URL: http://www.repository.naturalis.nl/record/527531 Alismataceae 16 Hartog, C. den. Annual or perennial aquatics and marsh plants, sometimes laticiferous. Leaves basal and erect, sometimes floating, rarely all submerged, sometimes some reduced to phyllodes, lanceolate to sagittate, rarely broad-elliptic to ovate, entire, with a hydathode on the apex, curvinerved, nerves more or less parallel and gradually joining the marginal nerve, connected by ascending cross-veins; petiole sheathing, mostly with air-channels, often septated. Inflorescences mostly erect, racemose or paniculate; peduncle sometimes hollow, mostly with air-channels. Bracts 3(-2) per whorl of flowers or branches. Flowers actinomorphous, bisexual or unisexual (and then rarely with rudiments of the other sex). Sepals 3, imbricate, green, parallel-nerved, convex, persistent.... Tipo: Article / Letter to the editor Ano: 1955 URL: http://www.repository.naturalis.nl/record/532650 Differences between the eggmasses of Alderia modesta and Limapontia depressa 16 Hartog, C. den. The eggmasses of the sacoglossan slugs Alderia modesta (LovéN) and Limapontia depressa A. & H. have often been described, but the differences between them have never been pointed out. ENGEL, GEERTS & VAN REGTEREN ALTENA (1940) even have written, that it was impossible to distinguish the spawnmasses of Alderia modesta from those of Limapontia depressa. During a stay at the Zoological Station at Den Helder in summer 1953, however, it appeared to me that there are clear differences between the eggmasses of the two species. Tipo: Article / Letter to the editor Ano: 1958 URL: http://www.repository.naturalis.nl/record/505072 De platte vorm van Lemna gibba, nog steeds een probleem 16 Hartog, C. den. A flat Lemna, obviously different from L. minor L., has been referred to as the flat form of L. gibba L. by DE LANGE & SEGAL (1968). L. gibba is able to produce flat fronds but this alone is insufficient evidence for the conclusion that the flat Lemna, so common in our waters, is only a pessimum form of it and not a separate taxon. From the literature it appears that the typical L. gibba includes at least 3 distinguishable races which show differences in the flowering process. The complete generative cycle of the flat Lemna has been observed in Belgium and in California. It comprises at least 2 races with respect to the flowering biology. According to the existing literature data it is proterogynic; in Leiden an unisexual male plant has been found. Tipo: Article / Letter to the editor Ano: 1968 URL: http://www.repository.naturalis.nl/record/527778 A synopsis of the Lemnaceae 16 Hartog, C. den; Plas, F. van der. The family Lemnaceae is divided into 2 subfamilies, Lemnoideae with the genera Spirodela and Lemna — the latter with 2 subgenera, Lemna and Staurogeton — and Wolffioideae with the genera Wolffia, Wolffiopsis, Wolffiella, and Pseudowolffia, the last two being new and based on former infrageneric taxa. All these taxa are described, and their types indicated; keys are provided for their distinction. Recognized species names are listed with their synonyms, a few being newly reduced. There are 5 new specific combinations. A list of invalid and dubious names is added. The excluded names are listed separately. An explanatory glossary is given of the terminology used in the descriptions, and is illustrated by some diagrams (fig. 1). Tipo: Article / Letter to the editor Ano: 1970 URL: http://www.repository.naturalis.nl/record/524867 Die Seepocke Elminius modestus auf Helgoland 16 Hartog, C. den. Im Jahre 1953 setzten Crisp & Southward auseinander, dass hinsichtlich Arten aus dem Gezeitengebiet, Seestrassen bisweilen eine unüberwindliche Sperre bilden. Crisp & Southward erläuterten diese Annahme u.a. mit den Beispielen der Seepocke Balanus perforatum Bruguière und der Napfschnecke Patella intermedia Jeffreys, Arten welche an der englischen Südküste vorkommen, jedoch in Irland fehlen und von welchen angenommen werden kann, dass es sich hier nicht um rezente Einwanderer handelt. Die Seepocke Elminius modestus Darwin, die sich während des Krieges in England ansiedelte (Bishop, 1947) und sich dort schnell verbreitete, ist ein interessantes Objekt um diese Annahme zu prüfen. Die südliche Nordsee sowohl wie der Kanal zeigten sich als Sperre nicht... Tipo: Article / Letter to the editor Ano: 1959 URL: http://www.repository.naturalis.nl/record/505007 Een tweede vondst van Plasmodiophora maritima in Nederland 16 Berge Henegouwen, A.L. van; Hartog, C. den. The parasitic fungus Plasmodiophora maritima G. Feldmann has recently been found in the Slufter salt marsh on the island of Texel; previously it had been recorded from the Balgzand salt marsh near Den Helder. The species causes conspicuous deformations of its host Triglochin maritima L. Tipo: Article / Letter to the editor Ano: 1973 URL: http://www.repository.naturalis.nl/record/527450 The Herbarium of the Institut Botanique de la Faculte des Sciences, Caen 16 Hartog, C. den. During the last world war the town of Caen was almost completely destroyed. The valuable collections of the Caen herbarium (CN) were evacuated and were thus saved. It is now twenty years after the war. The town of Caen has been beautifully rebuilt and the newly erected buildings of the university are very impressive. This university, founded in 1432, is now said to be not only the oldest but at the same time the most modern in France. Although the herbarium is now in a modern building, this does not mean that it is managed in a modern way. Tipo: Article / Letter to the editor Ano: 1965 URL: http://www.repository.naturalis.nl/record/533178 Registros recuperados: 37 Primeira ... 1 2 ... Última

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