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Acer pseudoplatanus, known as the sycamore in the United Kingdom and the sycamore maple in the United States, is a flowering plant species in the soapberry and lychee family Sapindaceae. It is a large deciduous, broad-leaved tree, tolerant of wind and coastal exposure. It is native to Central Europe and Western Asia, from France eastwards to Ukraine, northern Turkey and the Caucasus and southwards in the mountains of northern Spain and Italy.
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.
Acer × zoeschense is a hybrid maple, a cross between Acer campestre, and either Acer lobelii or Acer cappadocicum. While Field Maple parentage is universally accepted, the second parent is uncertain, though the tree's extensive production of root sprouts favours A. cappadocicum over A. lobelii. It takes its name from Zöschen Nurseries in Germany, where it first appeared as a garden hybrid at some time before 1870.
Acer davidii, or Père David's maple, is a species of maple in the snakebark maple group. It is native to China, from Jiangsu south to Fujian and Guangdong, and west to southeastern Gansu and Yunnan.
The elm cultivar Ulmus 'Rugosa' [:'wrinkled', the leaves], was first listed in Audibert's Tonelle (1817), as "U. campestris Linn. 'Rugosa' = orme d'Avignon [Avignon elm] ", but without description. A description followed in the Revue horticole, 1829. Green (1964) identified this cultivar with one listed by Hartwig and Rümpler in Illustrirtes Gehölzbuch (1875) as Ulmus montana var. rugosaHort.. A cultivar of the same name appeared in Loddiges' catalogue of 1836 and was identified by Loudon in Arboretum et Fruticetum Britannicum (1838) as Ulmus montana var. rugosaMasters, Masters naming the tree maple-bark elm. Ulmus montana was used at the time both for wych cultivars and for some cultivars of the Ulmus × hollandica group.
The Field Elm cultivar Ulmus minor 'Microphylla Pendula', the Weeping small-leaved elm, was first listed by the Travemünde nursery, Lübeck, and described by Kirchner in Petzold & Kirchner's Arboretum Muscaviense (1864), as Ulmus microphylla pendulaHort.. By the 1870s it was being marketed in nurseries in Europe and America as Ulmus campestris var. microphylla pendula.
The Field Elm cultivar Ulmus minor 'Pendula' was said to have been raised in Belgium in 1863. It was listed as Ulmus sativa pendula by C. de Vos in 1887, and by Boom in 1959 as a cultivar.
The Wych Elm cultivar Ulmus glabra 'Pendula Variegata' was first described in 1850, and later by J. F. Wood in The Midland Florist and Suburban Horticulturist (1851) as U. montana pendula variegata, the 'broad-leaved variegated weeping mountain elm', and was said by him to have originated in and been distributed by the Pontey nursery of Kirkheaton, Huddersfield, Yorkshire. It was listed by Hartwig & Rümpler in Illustrirtes Gehölzbuch (1875) as Ulmus montana (:glabra) var. pendula variegataHort.
Acer miyabei is a species of maple native to Japan, where it occurs in Hokkaidō and the Tōhoku region in northern Honshū.
Weeping trees are characterized by soft, limp twigs. This characterization may lead to a bent crown and pendulous branches that can cascade to the ground. While weepyness occurs in nature, most weeping trees are cultivars. Because of their shape, weeping trees are popular in landscaping; generally they need a lot of space and are solitary so that their effect is more pronounced. There are over a hundred different types of weeping trees. Some trees, such as the cherry, have a variety of weeping cultivars. There are currently around 550 weeping cultivars in 75 different genera, although many have now disappeared from cultivation.
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 Maple cultivar Acer campestre 'Elsrijk' is an American selection made from established city trees in Ohio in 1953, and introduced to the Netherlands in 1985, where it has become the most popular campestre cultivar.
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.
The Field MapleAcer campestre cultivar 'Commodore' is of obscure origin.
Acer palmatum, commonly known as Japanese maple, palmate maple, or smooth Japanese maple, is a species of woody plant native to Japan, Korea, China, eastern Mongolia, and southeast Russia. Many different cultivars of this maple have been selected and they are grown worldwide for their large variety of attractive forms, leaf shapes, and spectacular colors.
Acer platanoides 'Pendulum', or weeping Norway maple, is a weeping tree and a cultivar of Acer platanoides, the Norway maple. It was first found by Niemetz at Timișoara, Romania in 1901. No trees are known to survive of this cultivar.
Acer negundo 'Pendulum', or weeping boxelder maple, is a weeping tree and a cultivar of Acer negundo, the boxelder maple. It was first described by Fritz Kurt Alexander von Schwerin in 1896. No trees are known to survive of this cultivar.
Aesculus 'Pendula', or Weeping Red Horse Chestnut, was a weeping tree and a cultivar of the Aesculus Carnea Group, the Red Horse Chestnut Group, which is a cultivar group of artificial hybrids between Aesculus pavia and A. hippocastanum. The name first appeared in the 1902 edition of the Hand-list of Trees and Shrubs of the Royal Botanic Gardens, Kew without description. No trees are known to survive of this cultivar.
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
- ↑ Govaerts, R., Michielsen, K. & Jablonski, E. (2011). Untraced Weeping Broadleaf cultivars: an overview. Belgische Dendrologie Belge Archived 2012-03-22 at the Wayback Machine 2009: 19-30.
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