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Ulmus Minor 'Bea Schwarz'
The elm cultivar ''Ulmus minor'' 'Bea Schwarz' was cloned (as No. 62) at Wageningen in the Netherlands, by the elm disease committee, from a selection of ''Ulmus minor'' found in France in 1939. However, specimens of the tree grown in the UK and the United States are falsely treated as ''Ulmus × hollandica'' (after Fontaine ). Description The leaves are ovoid to oval (6 to 10 cm), emerging more or less purple-red; the underside is pillose. The tree is considered of poor growth and shape if grafted on ''U.'' × ''hollandica'' rootstock. Nowadays it is sparsely grown on its own rootstock. Pests and diseases Not resistant to the second, more virulent, strain of Dutch elm disease, ''(O. novo-ulmi)'', but more resistant to Coral Spot fungus ''Nectria cinnabarina'' than its forebear 'Christine Buisman'. Cultivation Commercial production was discontinued in the Netherlands soon after its release in 1948.Went, J. C. (1954). ''Tijschr. Plantenziekten'' 60: 109-127, 1954. Nevertheless ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cultivar
A cultivar is a kind of Horticulture, cultivated plant that people have selected for desired phenotypic trait, traits and which retains those traits when Plant propagation, propagated. Methods used to propagate cultivars include division, root and stem cuttings, offsets, grafting, micropropagation, tissue culture, or carefully controlled seed production. Most cultivars arise from deliberate human genetic engineering, manipulation, but some originate from wild plants that have distinctive characteristics. Cultivar names are chosen according to rules of the International Code of Nomenclature for Cultivated Plants (ICNCP), and not all cultivated plants qualify as cultivars. Horticulturists generally believe the word ''cultivar''''Cultivar'' () has two meanings, as explained in ''#Formal definition, Formal definition'': it is a classification category and a taxonomic unit within the category. When referring to a taxon, the word does not apply to an individual plant but to all plants t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marie Beatrice Schol-Schwarz
Marie Beatrice "Bea" Schol-Schwarz (12 July 1898 – 27 July 1969) was the Dutch phytopathologist who discovered the causal fungus of Dutch elm disease. She first studied pathogens afflicting peanuts and later the fungus '' Phialophora''. Biography Marie Beatrice Schwarz was born on 12 July 1898 in Batavia in the Dutch East Indies (present-day Jakarta, Indonesia). She studied at the Utrecht University in the Netherlands, where she was Johanna Westerdijk's first PhD student. During her studies in 1922, she discovered the causal fungus of Dutch elm disease. Schwarz spent most of her early professional life studying pathogens afflicting the groundnut '' Arachis hypogaea'' at the agricultural research station in Bogor. The elm tree ''Ulmus'' × ''hollandica'' 'Bea Schwarz' was named for her in recognition of her research into the cause of Dutch elm disease. Marrying in 1926, she retired from research to raise a family. When the East Indies were invaded by the Japanese a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loosdrecht
Loosdrecht () is a town in the municipality of Wijdemeren, North Holland, the Netherlands, with a population of about 8,600 inhabitants. Loosdrecht consists of two small villages: Nieuw-Loosdrecht and Oud-Loosdrecht. Nieuw Loosdrecht covers a small area densely populated; Oud-Loosdrecht consists mainly of lakeside villas. Until 2002 Loosdrecht was a separate municipality in the province of Utrecht Utrecht ( ; ; ) is the List of cities in the Netherlands by province, fourth-largest city of the Netherlands, as well as the capital and the most populous city of the Provinces of the Netherlands, province of Utrecht (province), Utrecht. The ..., covering the villages of Oud-Loosdrecht and Nieuw-Loosdrecht, and the hamlets of Breukeleveen and Muyeveld. Loosdrecht is known for its lakes, the , which thousands of tourists visit every year. The lakes are a hotspot for the well-to-do, with several exclusive yachting clubs and restaurants lining the shores. Smaller boats can vi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Holland
North Holland (, ) is a Provinces of the Netherlands, province of the Netherlands in the northwestern part of the country. It is located on the North Sea, north of South Holland and Utrecht (province), Utrecht, and west of Friesland and Flevoland. As of January 2023, it had a population of about 2,952,000 and a total area of , of which is water. From the 9th to the 16th century, the area was an integral part of the County of Holland. During this period West Friesland (region), West Friesland was incorporated. In the 17th and 18th centuries, the area was part of the province of Holland and commonly known as the Noorderkwartier (English: "Northern Quarter"). In 1840, the province of Holland was split into the two provinces of North Holland and South Holland. In 1855, the Haarlemmermeer was drained and turned into land. The provincial capital is Haarlem (pop. 161,265). The province's largest city and also the largest city in the Netherlands is the Dutch capital Amsterdam, with a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wijdemeren
Wijdemeren () is a municipality in the Netherlands, in the province of North Holland, on the western border of the Gooi region. Wijdemeren contains many lakes, including ''Spiegelplas'' and ''Ankeveense Plassen'' in the north(east) and ''Loosdrechtse Plassen'' in the (south)west. Wijdemeren was established as a merger of 's-Graveland, Loosdrecht, and Nederhorst den Berg on 1 January 2002. The former municipality of Loosdrecht belonged to the province of Utrecht (province), Utrecht. Population centres The municipality of Wijdemeren includes the following small towns and villages: Topography ''Map of the municipality of Wijdemeren, 2013.'' Local government Notable people * Jan Jacob Spöhler (1811–1866) painter * Hendrik Jan Schimmel (1823–1906) poet and novelist * Barend Klaas Kuiper (1877–1961) history professor and author, wrote on Dutch Calvinist church history * Tjalling Koopmans (1910–1985) Dutch American mathematician and economist, joint winner of the 1975 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Netherlands Plant Collection Ulmus
, informally Holland, is a country in Northwestern Europe, with overseas territories in the Caribbean. It is the largest of the four constituent countries of the Kingdom of the Netherlands. The Netherlands consists of twelve provinces; it borders Germany to the east and Belgium to the south, with a North Sea coastline to the north and west. It shares maritime borders with the United Kingdom, Germany, and Belgium. The official language is Dutch, with West Frisian as a secondary official language in the province of Friesland. Dutch, English, and Papiamento are official in the Caribbean territories. The people who are from the Netherlands is often referred to as Dutch Ethnicity group, not to be confused by the language. ''Netherlands'' literally means "lower countries" in reference to its low elevation and flat topography, with 26% below sea level. Most of the areas below sea level, known as ''polders'', are the result of land reclamation that began in the 14th century. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
