|
''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.〔Elwes, H. J. & Henry, A. (1913). ''(The Trees of Great Britain & Ireland )''. Vol. VII. 1848–1929. Republished 2014 Cambridge University Press, ISBN 9781108069380〕 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. ==Description== In areas unaffected by Dutch elm disease, Huntingdon Elms commonly grow to over 35 m, bearing long, straight branches ascending from a short bole < 4 in height; the bole of mature trees has distinctive lattice-patterned bark-ridges〔White, J. & More, D. (2002). ''Trees of Britain and northern Europe''. Cassell, London.〕〔Rackham, O. (1976). ''Trees and Woodland in the British Landscape''. J. M. Dent, London.〕 which serve to distinguish the tree from that other popular ''U.'' × ''hollandica'' cultivar 'Major', known as 'Dutch Elm', whose bark breaks into small shallow flakes.〔Hanson, M. W. (1990). Essex Elm. ''Essex Naturalist'', 10. Essex Field Club, 1990.〕 The glossy, oval leaves have petioles >10 mm long, which serve to distinguish the tree from the Wych Elm, and are very distinctly asymmetric at the base, < 12 cm long by < 7.5 cm broad contracting to an acuminate apex. The leaves are borne on smooth branchlets that never feature corky wings.〔Diagnostic photographs of young and mature Huntingdon elms, () (【引用サイトリンク】title= ) ()〕 The tightly-clustered apetalous flowers are bright red, and appear in early spring. The samarae are obovate, < 25 mm long. Elwes & Henry〔 and Bean〔Bean, W. J. (1981). ''Trees and shrubs hardy in Great Britain'', 7th edition. Murray, England.〕 attested that the Huntingdon Elm suckers freely, but other writers have stated that it does not sucker at all.〔〔Gurney, R. (1958). ''Trees of Britain''. Faber & Faber, London.〕 This contradiction is almost certainly owing to methods of propagation: higher class nurseries grafted cuttings onto Wych Elm stock, which would not produce suckers, whilst others simply rooted the cuttings, which would. A comparatively high percentage of the seed is usually viable.〔 Image:Huntingdon Elm leaves.jpg|Huntingdon Elm leaves; note long petioles. Image:Hunt. Elm bark 1.jpg|Huntingdon Elm bark; note lattice pattern. Image:Huntingdon elm.jpg|'Vegeta' in Hove Park, East Sussex. Image:Huntingdon Elm Southsea Common 2.jpg|Wind-pruned Huntingdon Elm, Southsea Common. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ulmus × hollandica 'Vegeta' (Huntingdon Elm)」の詳細全文を読む スポンサード リンク
|