Ulmus × hollandica 'Commelin' is a Dutch hybridcultivar released for sale in 1960. The tree was raised at Baarn as clone 274 by the Foundation Willie Commelin Scholten Phytopathological Laboratory [1] in 1940, from a crossing of Ulmus × hollandica 'Vegeta' and clone 1, an Ulmus minor selected from a 1929 elm seedlings lot obtained from the Barbier nursery, Orléans.
A fast-growing, attractively-shaped tree distinguished by its small pale-green leaves with bright venation and a slight blue-grey color distinction from ‘Vegeta’. The leaf shape is typically elliptic, with a short acuminate apex.[1] The leaves are sparsely arranged and fall significantly later than those of 'Vegeta'.[2]
Pests and diseasesEdit
Although resistant to the original strain of Dutch elm disease, Ophiostoma ulmi and a range of other ailments, 'Commelin' proved very susceptible to the later, aggressive strain Ophiostoma novo-ulmi subsp. americana.
CultivationEdit
'Commelin' initially enjoyed considerable commercial success and over 500,000 had been sold by 1974. However, the tree had only been screened for non-aggressive or semi-aggressive isolates of the causal fungus of Dutch elm disease. When its low resistance to the new strain of the disease became apparent, sales plummeted, and only 500 were sold in 1990.[3][4] However, neither 'Commelin' nor its slightly less vulnerable contemporary 'Groeneveld' had sold in great numbers beyond the Netherlands, although it was later used in hybridization experiments in the United States as female parent of several cultivars.
Notable treesEdit
The UK TROBI Champion is at Ashton Rise in Brighton, measuring 22 m high by 55 cm d.b.h. in 2009.[5]
^ The thicker branches have a slight sinusoid form compared to ‘Vegeta’, with straight branches. Photograph of 'Commelin' elm
^Heybroek, H.M. (1993). "The Dutch Elm Breeding Program". In Sticklen, Mariam B.; Sherald, James L. (eds.). Dutch Elm Disease Research. New York, USA: Springer-Verlag. pp. 16–25. ISBN978-1-4615-6874-2. Retrieved 26 October 2017..
^Burdekin, D.A.; Rushforth, K.D. (November 1996). Revised by J.F. Webber. "Elms resistant to Dutch elm disease" (PDF). Arboriculture Research Note. Alice Holt Lodge, Farnham: Arboricultural Advisory & Information Service. 2/96: 1–9. ISSN 1362-5128. Retrieved 26 October 2017.
^Johnson, O. (2011). Champion Trees of Britain & Ireland, p. 168. Kew Publishing, Kew, London. ISBN9781842464526.
ulmus, hollandica, commelin, dutch, hybrid, cultivar, released, sale, 1960, tree, raised, baarn, clone, foundation, willie, commelin, scholten, phytopathological, laboratory, 1940, from, crossing, ulmus, hollandica, vegeta, clone, ulmus, minor, selected, from,. Ulmus hollandica Commelin is a Dutch hybrid cultivar released for sale in 1960 The tree was raised at Baarn as clone 274 by the Foundation Willie Commelin Scholten Phytopathological Laboratory 1 in 1940 from a crossing of Ulmus hollandica Vegeta and clone 1 an Ulmus minor selected from a 1929 elm seedlings lot obtained from the Barbier nursery Orleans Ulmus hollandica Commelin Commelin Netherlands Hybrid parentageU hollandica Vegeta U minorCultivar Commelin OriginBaarn The Netherlands Contents 1 Description 2 Pests and diseases 3 Cultivation 4 Notable trees 5 Hybrid cultivars 6 Etymology 7 Accessions 7 1 North America 7 2 Europe 8 Nurseries 8 1 Europe 9 References 10 External linksDescription Edit A fast growing attractively shaped tree distinguished by its small pale green leaves with bright venation and a slight blue grey color distinction from Vegeta The leaf shape is typically elliptic with a short acuminate apex 1 The leaves are sparsely arranged and fall significantly later than those of Vegeta 2 Pests and diseases EditAlthough resistant to the original strain of Dutch elm disease Ophiostoma ulmi and a range of other ailments Commelin proved very susceptible to the later aggressive strain Ophiostoma novo ulmi subsp americana Cultivation Edit Commelin initially enjoyed considerable commercial success and over 500 000 had been sold by 1974 However the tree had only been screened for non aggressive or semi aggressive isolates of the causal fungus of Dutch elm disease When its low resistance to the new strain of the disease became apparent sales plummeted and only 500 were sold in 1990 3 4 However neither Commelin nor its slightly less vulnerable contemporary Groeneveld had sold in great numbers beyond the Netherlands although it was later used in hybridization experiments in the United States as female parent of several cultivars Notable trees EditThe UK TROBI Champion is at Ashton Rise in Brighton measuring 22 m high by 55 cm d b h in 2009 5 Hybrid cultivars Edit Homestead Regal Stavast Urban Etymology EditThe cultivar is named for Jan Commelin a Dutch botanist of the 17th century Accessions EditNorth America Edit Bartlett Tree Experts US No details available Holden Arboretum US No details available Morton Arboretum US Acc no 69 70Europe Edit Brighton amp Hove City Council UK NCCPG Elm Collection holders Grange Farm Arboretum 2 Sutton St James Spalding Lincs UK Acc no 840 Wijdemeren City Council Netherlands Elm Arboretum locations Spiegelweg 1 2 trees Nederhorst den Berg Parklaan 11 trees Zuidsingel 1 tree and 2 trees planted 2019 Strand Wijde Blik Kortenhoef Uithoorn Zijdelweg 1 tree amongst group of U x holl Vegeta distinguishes by its slightly blue leaves Nurseries EditEurope Edit Boomwekerijen De Batterijen 3 Ochten Netherlands Lorenz von Ehren 4 Hamburg Germany Noordplant 5 Glimmen Netherlands PlantenTuin Esveld 6 Boskoop Netherlands Standard Trees 7 Golden Cross East Sussex UK Westerveld Boomkwekerij B V 8 Opheusden Netherlands as U hollandica Commelin References Edit noordplant nl Commelin leaves The thicker branches have a slight sinusoid form compared to Vegeta with straight branches Photograph of Commelin elm Heybroek H M 1993 The Dutch Elm Breeding Program In Sticklen Mariam B Sherald James L eds Dutch Elm Disease Research New York USA Springer Verlag pp 16 25 ISBN 978 1 4615 6874 2 Retrieved 26 October 2017 Burdekin D A Rushforth K D November 1996 Revised by J F Webber Elms resistant to Dutch elm disease PDF Arboriculture Research Note Alice Holt Lodge Farnham Arboricultural Advisory amp Information Service 2 96 1 9 ISSN 1362 5128 Retrieved 26 October 2017 Johnson O 2011 Champion Trees of Britain amp Ireland p 168 Kew Publishing Kew London ISBN 9781842464526 External links Edit Herbarium specimen BR0000010844212 Botanic Garden Meise Sheet labelled Ulmus hollandica Commelin long shoot specimen from Jette Belgium 1983 Retrieved from https en wikipedia org w index php title Ulmus hollandica 27Commelin 27 amp oldid 1061469617, wikipedia, wiki, book, books, library,
