Ulmus davidiana var. japonica 'Validation'
Elm cultivar
Ulmus davidiana var. japonica 'Validation' | |
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Variety | Ulmus davidiana var. japonica |
Cultivar | 'Validation' |
Origin | Morton Arboretum, Illinois, US |
The Japanese Elm cultivar Ulmus davidiana var. japonica 'Validation' is a selection made by Kunso Kim and Bethany Brown of the Morton Arboretum released in 2011; propagation is by grafting onto Siberian Elm Ulmus pumila rootstocks. [1]
Description
'Validation' is a vase-shaped tree, the trunk bark smooth and gray. The current year's twigs are light green, contrasting with the previous year's, which are greenish brown.[1]
Pests and diseases
Not known.
Cultivation
The tree is very rare in cultivation beyond the Morton Arboretum.
Accessions
- North America
- Morton Arboretum, Illinois, US. Acc. No. 22-2008, one plant.
- Europe
- Grange Farm Arboretum, Lincolnshire, UK. Acc. no. 1126.
References
- ^ a b Morton Arboretum plant database, 2015. [1]
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Elm species, varieties, hybrids, hybrid cultivars and species cultivars
- 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
- Atropurpurea
- Australis
- Berardii
- Betulaefolia Nigrescens
- Crispa
- Crispa Aurea
- Crispa Pendula
- Densa
- Exoniensis
- Fastigiata Glabra
- Folia Aurea
- Folia Rubra
- Folia Variegata Pendula
- Gallica
- Glabra
- Globosa
- Hamburg
- Hertfordensis Angustifolia
- Hertfordensis Latifolia
- Hillieri
- Jalaica
- Jacqueline Hillier
- Kansas Hybrid
- Klemmer Blanc
- Koopmannii
- Lombartsii
- Louis van Houtte
- Marmorata
- Monstrosa
- Myrtifolia
- Myrtifolia Purpurea
- Nemoralis
- Nigrescens
- Planeroides
- Planifolia
- Purpurea
- Pyramidalis Bertini
- Ramulosa
- Rotundifolia
- Rubra
- Rufa
- Rugosa
- Scampstoniensis
- Sericea
- Tiliaefolia
- Tortuosa
- Turkestanica
- Variegata Nova
- Virens
- U. okanaganensis