Ulmus pumila 'Green King'
Ulmus pumila 'Green King' | |
---|---|
Species | Ulmus pumila |
Cultivar | 'Green King' |
Origin | US |
The Siberian elm cultivar Ulmus pumila 'Green King' was once believed to have been derived from a crossing of the Siberian Elm Ulmus pumila with the American Red Elm Ulmus rubra. However, it is now apparent the tree originated as a sport of U. pumila in 1939 at the Neosho Nurseries, Neosho, Missouri.[1]
Description
The tree typically forms a wide base and conical crown,[2] not dissimilar to the European Hornbeam Carpinus betulus 'Fastigiata' (known as 'Pyramidalis').
Pests and diseases
See under Ulmus pumila.
Cultivation
Green King's rate of growth is claimed to be from 2.5 m (8') to 3.4 m (11') per annum, and it offers significant resistance to wind and drought. The tree featured in the elm trials [1] conducted by Northern Arizona University at Holbrook, where it was noted that "the hybrid (sic) had not been widely tested for resistance to DED (Dutch elm disease)". Its performance in the Arizona trials seems to have been insufficiently good or bad to warrant any further comment. Although the tree remains commercially available in the United States, it is no longer widely planted, having been eclipsed by later developments such as 'Homestead' and disease-resistant cultivars of the American Elm U. americana. [citation needed] Moreover, its planting, as a clone of the Siberian Elm, is prohibited in Nevada and Oregon. The tree is not known to have been introduced to Europe or Australasia.
Synonymy
- Ulmus 'Broadleaf Hybrid': Kammerer, E. L. in Bull. Pop. Inf. Morton Arb. 36 (5): 25, 1961.
- Ulmus 'Field's New Hybrid Elm': Henry Field Seed & Nursery Co., Shenandoah, Iowa, (who renamed the tree 'Green King' c. 1960).
- Ulmus 'Green King': Morton Arboretum Catalogue, 2006.
- Ulmus 'Neosho'
Accessions
North America
- Morton Arboretum, US. Acc. no. 78–69, (listed simply as Ulmus 'Green King').
Europe
- Grange Farm Arboretum, Lincolnshire, UK. Acc. no. 1263, (listed simply as Ulmus 'Green King').
Nurseries
North America
References
- ^ Green, Peter Shaw (1964). "Registration of cultivar names in Ulmus". Arnoldia. 24 (6–8). Arnold Arboretum, Harvard University: 41–80. Retrieved 16 February 2017.
- ^ a b "Green King Hybrid Elm from Stark Bro's". Stark Bro's Nurseries & Orchards Co. Retrieved 2018-01-05.
External links
- http://www.ag.ndsu.nodak.edu/aginfo/trees/handbook/th-3-117.pdf Siberian Elm and its derivatives.
- v
- t
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- U. alata (Winged elm)
- U. americana (American elm)
- U. americana var. floridana (Florida elm)
- U. bergmanniana (Bergmann's elm)
- U. bergmanniana var. bergmanniana
- U. bergmanniana var. lasiophylla
- U. castaneifolia (Chestnut-leafed or multinerved elm)
- U. changii (Hangzhou elm)
- U. changii var. changii
- U. changii var. kunmingensis (Kunming elm)
- U. chenmoui (Chenmou or Langya Mountain elm)
- U. chumlia
- U. crassifolia (Cedar or Texas cedar elm)
- U. davidiana (David or Father David elm)
- U. davidiana var. davidiana
- U. davidiana var. japonica (Japanese elm)
- U. elongata (Long raceme elm)
- U. gaussenii (Anhui or hairy elm)
- U. glabra (Wych or scots elm)
- U. glaucescens (Gansu elm)
- U. glaucescens var. glaucescens
- U. glaucescens var. lasiocarpa (hairy-fruited glaucescent elm)
- U. harbinensis (Harbin elm)
- U. ismaelis
- U. laciniata (Manchurian cut-leaf or lobed elm)
- U. laciniata var. nikkoensis (Nikko elm)
- U. laevis (European white elm)
- U. laevis var. celtidea
- U. laevis var. parvifolia
- U. laevis var. simplicidens
- U. lamellosa (Hebei elm)
- U. lanceifolia (Vietnam elm)
- U. macrocarpa (Large-fruited elm)
- U. macrocarpa var. glabra
- U. macrocarpa var. macrocarpa
- U. mexicana (Mexican elm)
- U. microcarpa (Tibetan elm)
- U. minor (Field elm)
- U. minor subsp. minor
- U. minor var. italica
- U. parvifolia (Chinese or lacebark elm)
- U. parvifolia var. coreana (Korean elm)
- U. prunifolia (Cherry-leafed elm)
- U. pseudopropinqua (Harbin spring elm)
- U. pumila (Siberian elm)
- U. rubra (Slippery elm)
- U. serotina (September elm)
- U. szechuanica (Szechuan (Sichuan) or red-fruited elm)
- U. thomasii (Rock or cork elm)
- U. uyematsui (Alishan elm)
- U. villosa (Cherry-bark or marn elm)
- U. wallichiana (Himalayan or kashmir elm)
- U. wallichiana subsp. wallichiana
- U. wallichiana subsp. xanthoderma
- U. wallichiana var. tomentosa
- U. boissieri
- U. minor subsp. canescens (Grey, grey-leafed or hoary elm)
- U. elliptica
- U. davidiana var. japonica × U. minor
- U. × arbuscula
- U. × arkansana
- U. × brandisiana
- U. × diversifolia
- U. × hollandica (Dutch elm)
- U. × hollandica var. insularum
- U. × intermedia
- U. × mesocarpa
- aff. Plotii
- Acutifolia
- Alata
- Alksuth
- Argenteo-Marginata
- Aspera
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- Australis
- Berardii
- Betulaefolia Nigrescens
- Crispa
- Crispa Aurea
- Crispa Pendula
- Densa
- Exoniensis
- Fastigiata Glabra
- Folia Aurea
- Folia Rubra
- Folia Variegata Pendula
- Gallica
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- Globosa
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- Hertfordensis Angustifolia
- Hertfordensis Latifolia
- Hillieri
- Jalaica
- Jacqueline Hillier
- Kansas Hybrid
- Klemmer Blanc
- Koopmannii
- Lombartsii
- Louis van Houtte
- Marmorata
- Monstrosa
- Myrtifolia
- Myrtifolia Purpurea
- Nemoralis
- Nigrescens
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- Turkestanica
- Variegata Nova
- Virens
- U. okanaganensis