| 词条 | Ulmus minor 'Viminalis Betulaefolia' |
| 释义 |
| name = Ulmus minor 'Viminalis Betulaefolia' | species = Ulmus minor | cultivar = 'Betulaefolia' }} The Field Elm cultivar Ulmus minor 'Viminalis Betulaefolia' (:'birch-leaved') is an elm of uncertain origin.[1] An U. campestris var. betulaefolia was listed by Loddiges of Hackney, London, in the catalogue of 1836,[2] and later by Loudon in Arboretum et Fruticetum Britannicum (1838).[3] Henry described an U. campestris var. betulaefolia at Kew in 1913, obtained from Fulham nurseryman Osborne in 1879, as "scarcely different from var. viminalis" (U. minor 'Viminalis').[4] Melville considered the tree so named at Kew a form of his U. × viminalis,[5] while Bean (1988), describing U. 'Betulaefolia', likewise placed it under U. 'Viminalis' as an apparently allied tree.[6] Loudon and Browne had noted that some forms of 'Viminalis' can be mistaken for a variety of birch.[7][8] An U. campestris betulaefolia was distributed by Hesse's Nurseries, Weener, Germany, in the 1930s.[9] Henry (1913) also described an U. nitens var. betulaefolia , a cultivar with long, narrow un-birchlike leaves, a herbarium specimen of which from Audley End, Suffolk, is preserved at Kew (see External links below).[10] Henry did not include this cultivar, represented by a specimen in the Cambridge University Botanic Garden, as a form of 'Viminalis', but both he and Green took it to be a synonym of Loudon's 'Betulaefolia'. Melville determined this tree a triple hybrid, U. carpinifolia gled. × U. plotii Druce × U. glabra Huds..[11]DescriptionLoudon's U. campestris var. betulaefolia was distinguished by its leaves "somewhat resembling common birch".[12] Henry's U. nitens var. betulaefolia was "a pyramidal tree with ascending branches, with leaves up to 4 in. by 1.5 in., long-acuminate at the apex and narrowing towards a cuneate but unequal base".[13] Bean's U. 'Betulaefolia' was an "elegant" tree with pendulous young branchlets, leaves narrowly obovate, 2–2.5 in. by 1.5, rough above, downy in the vein-axils beneath, with deeply toothed margins, the teeth being narrow, incurved, and often double.[14] Wesmael (1863) had likewise described an Ulmus campestris var. nuda subvar. betulaefolia Hort.Vilv. with sharp-pointed double teeth.[15] Pests and diseasesTrees of the U. × viminalis group are very susceptible to Dutch elm disease. CultivationNo specimens of U. × viminalis labelled 'Betulaefolia' are known to survive. References1. ^{{cite book|title=Trees and shrubs hardy in Great Britain|edition=8|last=Bean|first=William Jackson|date=1988|pages=659|publisher=Murray|location=London}} 2. ^{{Cite journal|last=Loddiges|first=Conrad|date=1836|title=Catalogue of plants, in the collection of Conrad Loddiges & Sons, nurserymen, at Hackney, near London.|url=https://archive.org/stream/catalogueofplant1836lodd#page/34/mode/2up/|journal=13|page=35|doi=|pmid=|access-date=}} 3. ^[https://archive.org/stream/arboretumetfruti03loudrich#page/1376/mode/1up Arboretum et Fruticetum Britannicum, 3: 1376, 1838] 4. ^{{cite book|last1=Elwes|first1=Henry John|authorlink1=Henry John Elwes|last2=Henry|first2=Augustine|authorlink2=Augustine Henry|date=1913|title=The Trees of Great Britain & Ireland|volume=7|page=1906|url=https://archive.org/stream/treesofgreatbrit07elweuoft#page/1896/mode/2up}} 5. ^{{cite journal |last=Green |first=Peter Shaw |authorlink=Peter Shaw Green |date=1964 |title=Registration of cultivar names in Ulmus|url=https://archive.org/stream/arnoldiaarno_21#page/40/mode/2up/|journal=Arnoldia |volume=24|pages=41–80 |number=6–8 |publisher=Arnold Arboretum, Harvard University |access-date=16 February 2017}} 6. ^{{cite book|title=Trees and shrubs hardy in Great Britain|edition=8|last=Bean|first=William Jackson|date=1988|pages=659|publisher=Murray|location=London}} 7. ^Loudon, [https://archive.org/stream/arboretumetfruti03loudrich#page/1376/mode/1up Arboretum et Fruticetum Britannicum, 3: 1378, 1838] 8. ^Browne, D. J. (1846). The Trees of America. Harper & Brothers, New York. 9. ^{{cite book|last1=Hesse|first1=Hermann Albert|title=Preis- und Sortenliste|date=1932|pages=96-97|url=https://archive.org/stream/HesseHermA1932#page/n96/mode/1up/|accessdate=18 January 2018}} 10. ^U. nitens var. betulaefolia Henry, apps.kew.org 11. ^{{cite book|last1=Elwes|first1=Henry John|authorlink1=Henry John Elwes|last2=Henry|first2=Augustine|authorlink2=Augustine Henry|date=1913|title=The Trees of Great Britain & Ireland|volume=7|page=1896|url=https://archive.org/stream/treesofgreatbrit07elweuoft#page/1896/mode/2up}} 12. ^Loudon (1838), p.1376 13. ^{{cite book|last1=Elwes|first1=Henry John|authorlink1=Henry John Elwes|last2=Henry|first2=Augustine|authorlink2=Augustine Henry|date=1913|title=The Trees of Great Britain & Ireland|volume=7|page=1896|url=https://archive.org/stream/treesofgreatbrit07elweuoft#page/1896/mode/2up}} 14. ^{{cite book|title=Trees and shrubs hardy in Great Britain|edition=8|last=Bean|first=William Jackson|date=1988|pages=659|publisher=Murray|location=London}} 15. ^ {{cite web | title=Bulletin de la Fédération des sociétés d'horticulture de Belgique | last = Wesmael |first = Alfred | authorlink = Alfred Wesmael | date= 1862 | pages = 389 | url=http://hdl.handle.net/2027/hvd.32044103102810?urlappend=%3Bseq=399 | access-date=6 July 2017}} External links
4 : Field elm cultivar|Ulmus|Missing elm cultivars|Ulmus articles missing images |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。