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| Registros recuperados: 114 | |
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| Ooststroom, S.J. van. |
| Some time ago I described in Blumea (5) a plant collection in book-form, collected by Hermann in Ceylon. This collection consists of two large volumes, each containing a number of dried specimens. Besides these two volumes, the Rijksherbarium is in the possession of a third one of the same size and with a similar binding, bearing on its back the title in golden characters on a darker ground: Herb: Viv: Promont. Bonae Spei Vol: I. When I saw the specimens of this volume for the first time, it struck me that they did not show the peculiar type of plants from the Cape region. A somewhat closer examination lead me to the supposition, that I had to do with plants from South America. I was strengthened in that opinion by the fact that many of the vernacular... |
| Tipo: Article / Letter to the editor |
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| Ano: 1939 |
URL: http://www.repository.naturalis.nl/record/534960 |
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| Ooststroom, S.J. van. |
| Flore générale de Belgique. Spermatophytes, vol. V, fascicule 1, par A. LAWALRÉE. Bruxelles, 1966, 108 p., 30 fig. Van deze flora, die ook voor de Nederlandse botanicus van groot belang is, verscheen onlangs de eerste aflevering van het 5e deel der Spermatophyten, evenals de vorige afleveringen — telkens 3 per deel — bewerkt door Dr. Lawalrée van de Rijksplantentuin te Brussel. Deze aflevering bevat de families der Tiliaceae, Malvaceae, Guttiferae, Elatinaceae, Cistaceae, Violaceae en Thymelaeaceae. Met de afsluiting van het 5e deel waaraan dus nu nog 2 afleveringen ontbreken zullen nu alle in België voorkomende families der Choripetalae zijn behandeld. Resteren dan nog de Sympetalae en de Monocotyledoneae. Wij spreken de hoop uit dat ook deze groepen door... |
| Tipo: Article / Letter to the editor |
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| Ano: 1966 |
URL: http://www.repository.naturalis.nl/record/527510 |
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| Hoekstra, J.A.; Ooststroom, S.J. van. |
| De koningsvaren op Schiermonnikoog. Terschelling (zie Gorteria 3, no. 13, 1967, p. 204) is niet het enige Waddeneiland waarop Osmunda regalis is gevonden. In 1964 werd één exemplaar aangetroffen in het Grieënglop op Schiermonnikoog, een vlak terrein aan de rand van het binnenduin, dat eens is afgegraven. De begroeiing van het middendeel is op sommige plaatsen door verscheidene zeggesoorten en grassen, kruipwilg en heide-achtigen als vegetatievormende soorten gekenmerkt. De plant groeide in een betrekkelijk droog gedeelte. Deze vondst werd reeds vermeld in de lijst van nieuwe vindplaatsen in Gorteria 2, no. 9, 1965, p. 110. |
| Tipo: Article / Letter to the editor |
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| Ano: 1966 |
URL: http://www.repository.naturalis.nl/record/528059 |
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| Ooststroom, S.J. van. |
| Two species of Biscutella, viz. B. auriculata L. and B. didyma L. are known as aliens in the Netherlands. They can be distinguished from each other as follows: 1. Petals c. 10—15 mm long, with a long claw. Outer sepals saccate at the base. Silicula not emarginate at the apex, but narrowed into the style .............. 1. B. auriculata L. 1’. Petals c. 3—5 mm long, with a very short claw. Outer sepals not saccate. Silicula emarginate at the apex .............................. 2. B. didyma L. Of B. didyma both var. leiocarpa (DC.) Halacsy (glabrous fruits) and var. ciliata (DC.) Halacsy (fruits with ciliate margins and sometimes with short hairs on the valves) have been found. |
| Tipo: Article / Letter to the editor |
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| Ano: 1970 |
URL: http://www.repository.naturalis.nl/record/527507 |
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| Ooststroom, S.J. van. |
| Frutex scandens. Caules in statu florigero foliis destituti, internodiis longis, usque ad 18 cm metientibus, in nodis ramulos laterales breves vel apicem versus inflorescentias emittentes. Ramuli laterales folia nonnulla vel inflorescentias gerentes, internodiis multo brevioribus vel brevissimis. Caules teretes vel juniores obscure angulati, griseo-brunnei, in sicco longitudinaliter hinc inde transversaliter rugosi, juniores pilis brevibus adpressis praediti, adultiores glabri, plusminusve verrucosi (lenticellati). Folia petiolata ; petiolo breviter et adpresse piloso ut in partibus junioribus caulis, supra sulcato, ad 6 cm longo; lamina ovato-oblonga, apice breviter acuminata, basi ± rotundata (vel in foliis junioribus late cuneata), nervis exceptis... |
| Tipo: Article / Letter to the editor |
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| Ano: 1945 |
URL: http://www.repository.naturalis.nl/record/525857 |
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| Ooststroom, S.J. van. |
| At the end of the previous number of “Blumea” could just be inserted the death notice of one of the honorary collaborators of the Rijksherbarium, Dr Ir A. W. Kloos, who passed away in his home at Dordrecht on June 3rd, 1952. A more detailed obituary may follow here. Abraham Willem Kloos was born at Wormerveer on April 10th, 1880. At West-Knollendam he attended his father’s school, afterwards went to the secondary school at Zaandam, and, in 1903, he took his degree as a civil engineer at Delft. Then, from 1904 till 1905 he worked as a teacher to the Nautical School, Schiermonnikoog, and from 1905 till 1911 he taught at the Secondary School, Goes. In the latter year Kloos was appointed to the Technical School, Dordrecht, where he worked until his retirement... |
| Tipo: Article / Letter to the editor |
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| Ano: 1952 |
URL: http://www.repository.naturalis.nl/record/525939 |
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| Ooststroom, S.J. van. |
| Het Instituut voor het Vegetatie-onderzoek van Nederland (I.V.O.N.) werd opgericht in 1930 en is thans gevestigd in het Rijksherbarium, Nonnensteeg 1 , Leiden, Het stelt zich o.a. ten doel om door stelselmatige inventarisatie een overzicht te verkrijgen van de verspreiding der in Nederland voorkomende Pteridophyta en Spermatophyta. Reeds in 1902 werd door de heren Dr. J.W.C. Goethart en W. J. Jongmans, destijds resp. conservator en assistent aan het Rijksherbarium, een aanvang gemaakt motdit biogoo grafische onderzoek. In de jaren daarna werd het met medewerking van een aantal Nederlandse floristen voortgezet, waarna men wegens de toenemende betekenis van het werk en met medewerking van de heren Goethart en Jongmans in 1930 kwam tot de oprichting van het... |
| Tipo: Article / Letter to the editor |
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| Ano: 1956 |
URL: http://www.repository.naturalis.nl/record/534158 |
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| Ooststroom, S.J. van; Reichgelt, Th.J.. |
| The genus Chloris Sw. is represented in the Netherlands by 4 adventitious species, viz. C. virgata Sw., C. truncata R. Br., C. divaricata R. Br., and C. pycnothrix Trin. Descriptions of these species and figures of their florets are given. The four species may be distinguished with the aid of the following key: 1. Lemma of the bisexual floret in the upper part with c. 2-3 mm long hairs on the margin; hairs distinctly exceeding the top of the lemma. Leaves gradually narrowed into the acute apex ................................... 1. C. virgata 1’. Lemma of the bisexual floret nearly glabrous, or shortly hairy with hairs not exceeding the top of the lemma. Leaves abruptly narrowed into the obtuse or obtusish apex. 2. Lemma of the bisexual floret and of the... |
| Tipo: Article / Letter to the editor |
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| Ano: 1962 |
URL: http://www.repository.naturalis.nl/record/527026 |
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| Ooststroom, S.J. van. |
| This is the second contribution to a series of papers dealing with the Convolvulaceae of Malaysia (Malay Peninsula and Archipelago, Philippine Islands and New Guinea). The genera worked out here belong to the tribe Convolvuleae; they are numbered VIII—XV. Genus VII, Erycibe, belonging to the Erycibeae shall be treated afterwards in a special monograph. With regard to the geographic arrangement of the specimens mentioned, some alterations had to be introduced due to the new limitation of the residencies in the island of Java. The names and limits of these residencies are now brought into line with the data of the ”Atlas van Tropisch Nederland“ ²). |
| Tipo: Article / Letter to the editor |
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| Ano: 1939 |
URL: http://www.repository.naturalis.nl/record/525655 |
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| Ooststroom, S.J. van. |
| Hallier ²) subdivided the Convolvulaceae into two groups, viz. the Psiloconiae, with smooth pollen grains, and the Echinoconiae with spinose ones. The genera of the Psiloconiae occurring in Malaysia have been dealt with in parts I and II of the present paper, with exception of the genus Erycibe, which shall be treated in a special monograph. The group of Echinoconiae contains two tribes, viz. 1. Ipomoeeae and 2. Argyreieae, both represented in Malaysia. The genus Ipomoea belongs to the Ipomoeeae. |
| Tipo: Article / Letter to the editor |
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| Ano: 1940 |
URL: http://www.repository.naturalis.nl/record/525025 |
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| Mennema, J.; Ooststroom, S.J. van. |
| The list of new localities of rare species and interesting records of more common species found in the Netherlands mainly during 1978, has been subdivided into three categories: A. Netherlands species; B. Adventitious species; C. Species escaped from cultivation. Category A includes the species — also naturalised ones — belonging to the Netherlands flora, as established by the Floristic Council in 1975 and inserted in the Standard List of the Netherlands Flora 1975 (ARNOLDS & VAN DER MEIJDEN, 1976). In list A comments have been added, where necessary; adventitious records of Netherlands species are indicated with adv., escapes from cultivation with verw. The names of taxa new for the Netherlands, are in bold type. |
| Tipo: Article / Letter to the editor |
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| Ano: 1979 |
URL: http://www.repository.naturalis.nl/record/527918 |
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| Registros recuperados: 114 | |
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