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Acer campestre, known as the field maple, is a flowering plant species in the family Sapindaceae. It is native to much of continental Europe, Britain, southwest Asia from Turkey to the Caucasus, and north Africa in the Atlas Mountains. It has been widely planted, and is introduced outside its native range in Europe and areas of USA and Western Australia with suitable climate.
Ulmus × hollandica 'Vegeta', sometimes known as the Huntingdon Elm, is an old English hybrid cultivar raised at Brampton, near Huntingdon, by nurserymen Wood & Ingram in 1746, allegedly from seed collected from an Ulmus × hollandica hybrid at nearby Hinchingbrooke Park. The tree was given the epithet 'Vegeta' by Loudon, a name previously accorded the Chichester Elm by Donn, as Loudon considered the two trees identical. The latter is indeed a similar cultivar, but raised much earlier in the 18th century from a tree growing at Chichester Hall, Rawreth in Essex.
Acer shirasawanum, the Shirasawa maple or fullmoon maple, is a species of maple native to Japan, on central and southern Honshū, Shikoku, and Kyūshū.
The field elm cultivar Ulmus minor 'Stricta', known as Cornish elm, was commonly found in South West England and Brittany until the arrival of Dutch elm disease in the late 1960s. The origin of Cornish elm in England remains a matter of contention. It is commonly assumed to have been introduced from Brittany. It is also considered possible that the tree may have survived the ice ages on lands to the south of Cornwall long since lost to the sea. Henry thought it "probably native in the south of Ireland". Dr Max Coleman of Royal Botanic Garden Edinburgh, arguing in his 2002 paper on British elms that there was no clear distinction between species and subspecies, suggested that known or suspected clones of Ulmus minor, once cultivated and named, should be treated as cultivars, preferred the designation U. minor 'Stricta' to Ulmus minor var. stricta. The DNA of 'Stricta' has been investigated and the cultivar is now known to be a clone.
Acer japonicum, the Amur maple, downy Japanese-maple or fullmoon maple, is a species of maple native to Japan, on Honshū, Hokkaidō, Kyūshū, and also southern Korea.
The Wych Elm cultivar Ulmus glabra 'Cornuta', in cultivation before 1845 – Fontaine (1968) gives its provenance as France, 1835 – is a little-known tree, finally identified as a cultivar of U. glabra by Boom in Nederlandse Dendrologie 1: 157, 1959.
The Chinese Elm cultivar Ulmus parvifolia 'Dynasty' is a United States National Arboretum introduction reputed to be very fast-growing.
The hybrid elm cultivar Ulmus 'Den Haag' is a Dutch development derived from a chance crossing of the Siberian Elm cultivar Ulmus pumila 'Pinnato-ramosa' and the Belgian Elm Ulmus × hollandica 'Belgica'. S. G. A. Doorenbos (1891-1980), Director of Public Parks in The Hague, finding that seeds he had sown in 1936 from the Zuiderpark 'Pinnato-ramosa' had hybridized with the local 'Belgica', selected six for trials. The best was cloned and grafted on 'Belgica' rootstock as 'Den Haag'; it was planted first in that city, then released to nurseries elsewhere in the Netherlands. The other five were also planted in The Hague.
The Field Elm cultivar Ulmus minor 'Cucullata', the Hooded elm, was listed by Loddiges of Hackney, London, in their catalogue of 1823 as Ulmus campestris cucullata, and later by Loudon in Arboretum et Fruticetum Britannicum (1838), as U. campestris var. cucullata.
The Siberian Elm cultivar Ulmus pumila 'Pendula' is from northern China, where it is known as Lung chao yü shu. It was classified by Frank Meyer in Fengtai in 1908, and introduced to the United States by him from the Peking Botanical Garden as Weeping Chinese Elm. The USDA plant inventory record (1916) noted that it was a "rare variety even in China". It was confirmed as an U. pumila cultivar by Krüssmann (1962).
Ulmus 'Fiorente' is a hybrid cultivar elm derived from a crossing of the Siberian Elm Ulmus pumila clone 'S.10' from Lucca, Italy, with the Ulmus minor clone 'C.02' from Lungarno, Florence, by the Istituto per la Protezione delle Piante (IPP), part of the Italian National Research Council, in Florence. 'Fiorente' was patented in 2006, and released to commerce in 2012.
The Field Elm cultivar Ulmus minor 'Purpurascens' was listed by Lavallée in Arboretum Segrezianum (1877) as U. campestris var. purpurascens (purpurea), but without description, and later by Schneider in Illustriertes Handbuch der Laubholzkunde (1904). Krüssmann in Handbuch der Laubgehölze (1962) identified it as a cultivar.
The 'dwarf' elm cultivar Ulmus 'Jacqueline Hillier' ('JH') is an elm of uncertain origin. It was cloned from a specimen found in a private garden in Selly Park, Birmingham, England, in 1966. The garden's owner told Hillier that it might have been introduced from outside the country by a relative. Hillier at first conjectured U. minor, as did Heybroek (2009). Identical-looking elm cultivars in Russia are labelled forms of Siberian Elm, Ulmus pumila, which is known to produce 'JH'-type long shoots. Melville considered 'JH' a hybrid cultivar from the 'Elegantissima' group of Ulmus × hollandica. Uncertainty about its parentage has led most nurserymen to list the tree simply as Ulmus 'Jacqueline Hillier'. 'JH' is not known to produce flowers and samarae, or root suckers.
Acer miyabei is a species of maple native to Japan, where it occurs in Hokkaidō and the Tōhoku region in northern Honshū.
The Field Maple cultivar Acer campestre 'William Caldwell' was cloned from a seedling discovered at Caldwell's Ollerton Nursery near Knutsford, England, on 16 September 1976 by Donovan Caldwell Leaman, Director of the Caldwell's Nurseries that closed on 31 January 1992, after 212 years in Knutsford. The tree was released to commerce in 1984.
The Field MapleAcer campestre cultivar 'Compactum' was first described in 1839.
The Field MapleAcer campestre cultivar 'Eastleigh Weeping' or 'Weeping Eastleigh Field Maple' is a weeping tree that originated as a seedling at the Hillier & Son nursery, Ampfield, England, and was released in 1980. No trees are known to survive of this cultivar.
Acer campestre 'Puncticulatum', or Weeping Speckled Field Maple, is a weeping tree and a cultivar of Acer campestre, the Field Maple. It was first described by Schwerin in 1893. No trees are known to survive of this cultivar.
The Elm cultivar Ulmus 'Myrtifolia Purpurea', the Purple Myrtle-leaved Elm, was first mentioned by Louis de Smet of Ghent (1877) as Ulmus myrtifolia purpurea. An U. campestris myrtifolia purpureaHort. was distributed by Louis van Houtte in the 1880s, by the Späth nursery, Berlin, in the 1890s and early 1900s, and by the Hesse Nursery, Weener, Germany, till the 1930s.
Ulmus minorvar.italica was first described by Augustine Henry in 1913, as a 'variety' of field elm from Italy, Spain, Portugal and Algeria. He called it Ulmus nitens var. italica, 'Mediterranean Elm'. The variety was accepted by Krüssman (1984), despite the wide source-area claimed for it, as a non-clonal cultivar, U. carpinifolia var. italicaHenry. Bean (1988), however, considered it "a variety of rather dubious standing", and it was ignored by Richens (1983), who listed instead a "small-leaved U. minor of Spain" and a "narrow-leaved U. minor of northern and central Italy", as well as "the densely hairy leaved U. minor of southern Italy", the latter being Ulmus minor subsp. canescens, formerly Melville's Ulmus canescens.
References
- ↑ "Google Translate". translate.google.co.uk. Retrieved 2015-06-21.
- ↑ More, D. & White, J. (2003). Trees of Britain & Northern Europe. Cassell's, London. ISBN 0-304-36192-5
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