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The Info List - Ulmus 'Sapporo Autumn Gold'





Ulmus
Ulmus
' Sapporo
Sapporo
Autumn Gold' is one of the most commercially successful hybrid elm cultivars ever marketed, widely planted across North America and western Europe, although it has now been largely supplanted by more recent introductions.[1] Arising from a chance crossing of the Japanese elm (female parent) and Siberian elm, seed was sent in 1958 by Prof. Nobuku Takahashi and his colleagues at the Sapporo
Sapporo
Botanical Garden of Hokkaido University, Sapporo,[2] to Eugene Smalley at the University of Wisconsin–Madison.[3][4] The patent issued in 1975 has expired, and there are now no propagation restrictions.

Contents

1 Description 2 Pests and diseases 3 Cultivation 4 Notable trees 5 Synonymy 6 Accessions

6.1 North America 6.2 Europe 6.3 Australasia

7 Nurseries 8 References

Description[edit] The tree usually forks at 1.5–2 m from the ground to produce a broad, rounded, densely foliated crown, though immature plants produce vigorous side shoots requiring assiduous pruning to maintain shape. The bark is pale grey, and longitudinally fissured to form a random lattice pattern. The leaves are narrowly elliptical, < 9 cm long by < 4.5 cm wide, with 8 mm petioles. As the name implies, the leaves turn pale yellow in autumn.[5] The perfect, apetalous wind-pollinated flowers appear in early March, followed by the seeds in April; flowering usually begins when the tree is aged six years.

Bark of 30-year-old tree

Foliage

Coastal tree, Mudeford, UK

Tree left unpruned

Pests and diseases[edit] ' Sapporo
Sapporo
Autumn Gold' possesses a very high resistance to Dutch elm disease;[6][7] in trials in Italy, it sustained only 2.8% defoliation and 1.2% dieback when inoculated with unnaturally high concentrations of the fungal pathogen.[5] The cultivar also has a tolerance of Verticillium
Verticillium
wilt.[8] The tree's foliage was adjudged 'resistant' to black spot by the Plant Diagnostic Clinic of the University of Missouri [6], however it can be severely damaged by the elm leaf beetle (Xanthogaleruca luteola) in the United States [9] Several mature specimens near the Hampshire
Hampshire
coast in England
England
have become (2014) afflicted by Dryad's saddle fungus (Polyporus squamosus).[10] Cultivation[edit] In favorable conditions; notably a moist, well-drained soil, the tree can grow at a rate of almost one meter per year. Trials by the Northern Arizona University
Northern Arizona University
[7] found that it is not very tolerant of a hot, arid climate although its leaves sustained comparatively little scorch damage. In trials in southern England
England
conducted by Butterfly Conservation, the tree was found to be intolerant of ponding overwinter.[10] ' Sapporo
Sapporo
Autumn Gold' was first introduced to the UK by technology company Pitney Bowes
Pitney Bowes
as part of its 'Elms Across Europe' campaign. The company supplied the cultivar to schools, parks and gardens throughout the UK and Europe.[11] The tree remains popular in continental Europe but does not assimilate well in the countryside. In trials in France by Cemagref at Nogent-sur-Vernisson, Loiret, it was found to grow too vigorously in hedgerow conditions, eclipsing neighbouring shrubs and consequently creating gaps. In rich soils in the Netherlands the tree grows too fast and has poor wind resistance, whereas in poor, dry conditions it grows slower and is more wind resistant. The hybrid was included in trials [8] in Canberra, Australia started in 1988, but has not performed well there. In the UK, ' Sapporo
Sapporo
Autumn Gold' has been found to host the endangered white-letter hairstreak butterfly (Satyrium w-album), whose larvae feed exclusively on elm.[12] Notable trees[edit] The very first tree planted in the UK in 1979 at Pitney Bowes
Pitney Bowes
by Denis Thatcher survives (2012) in perfect health [9]. Of five trees planted in 1980 on the green in Clifton, one survives (2016), the others having suffered "catastrophic branch collapse" in storms.[13] Other notable plantings were as street trees across Bexhill-on-Sea, East Sussex in late 1980s, and as riverside trees along the Ouse in York (from Lendal Bridge to Clifton Ings). The largest specimen in Europe known to Dutch elm expert Hans M. Heybroek
Hans M. Heybroek
grows at the Istituto per la Protezione delle Piante's Monna Giovanella nursery at Antella, near Florence (see Infobox photo). Synonymy[edit]

Shapiro Autumn Gold: Whitcomb, C. E. Know it and grow it, p. 171, 1976, missprint for 'Sapporo'.

Accessions[edit] North America[edit]

Bartlett Tree Experts. Acc. nos. 88–1153, 88–1154 Dominion Arboretum, Ottawa, Ontario, Canada. No acc. details. Holden Arboretum. Acc. no. 91–79

Europe[edit]

Arboretum de La Petite Loiterie [10], Monthodon, France. No details available. Brighton & Hove City Council, UK, NCCPG Elm
Elm
Collection.[14] Examples in Blaker's Park, Stanmer Park, Preston Park and Woodvale cemetery. Cambridge Botanic Garden
Cambridge Botanic Garden
[11], University of Cambridge, UK. No accession details available. Great Fontley, Fareham, UK, Butterfly Conservation
Butterfly Conservation
Elm
Elm
Trials plantation, Home Field. National Botanic Gardens [12], Glasnevin, Dublin, Ireland. Location: A3 (158). Royal Botanic Gardens Wakehurst Place, UK. Acc. no. 1987–4028. Royal Horticultural Society
Royal Horticultural Society
Gardens Wisley, UK, no details available. Sir Harold Hillier Gardens, Romsey, Hampshire
Hampshire
UK. Acc. no. 1981.1753. Thenford
Thenford
House Arboretum, Thenford, UK. No details available. University Parks, Oxford, UK. Acc. no. 02565, 02566. Westonbirt Arboretum
Westonbirt Arboretum
[13], Tetbury, Glos., UK. Planted 1981, acc. no. 1980/159. Wijdemeren City Council, Netherlands, Elm
Elm
collection. Planted at Rading 1, Loosdrecht (2007); Overmeerseweg (2015) and De Vijnen (2017) Nederhorst den Berg.

Australasia[edit]

Waite Arboretum [14], University of Adelaide, Adelaide, Australia. Acc. nos. 572, 598

Nurseries[edit]

Coles Nurseries [15], Thurnby, Leicester, UK. Pepinieres Minier, les Fontaines de l'Aunay, France

References[edit]

^ Santamour, J., Frank, S. & Bentz, S. (1995). Updated checklist of elm (Ulmus) cultivars for use in North America. Journal of Arboriculture, 21: 3 (May 1995), 121–131. International Society of Arboriculture, Champaign, Illinois, USA. [1] ^ Smalley, E. B. and Guries, R. P. Asian Elms: Sources of Disease and Insect Resistance, in Dunn, C P. (ed.). (2000).The Elms - Breeding, Conservation, and Disease Management. Springer Science + Business Media LLC., New York. ISBN 9781461370321 ^ Smalley, E. B. & Lester, D. T. (1973). HortScience 8: 514–515, 1973. ^ Smalley, E. B. & Guries, R. P. (1993). Breeding Elms for Resistance to Dutch Elm
Elm
Disease. Annual Review of Phytopathology Vol. 31 : 325–354. Palo Alto, California. ^ Photograph of autumn colouring of 'Sapporo' elm, [2]. ^ Pinon, J., Lohou, C. & Cadic, A. (1998). Hybrid Elms (Ulmus Spp.): Adaptability in Paris and behaviour towards Dutch elm disease (Ophiostoma novo-ulmi). Acta Horticulturae 496, 107–114, 1998. ^ Pinon, J. (July 2007). "Les ormes résistants à la graphiose" [Elms resistant to Dutch Elm
Elm
Disease] (PDF). Forêt-entreprise. Paris, France: IDF (175): 37–41. ISSN 0752-5974. 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.  ^ " Elm
Elm
Leaf Beetle Survey". Archived from the original on 2011-07-19. Retrieved 17 July 2017.  ^ a b Brookes, A. H. (2015). Disease-resistant elms, Butterfly Conservation trials report, 2015 Butterfly Conservation, Hants & IoW Branch, England. [3] ^ Great British Elm
Elm
Experiment website, with photograph of one of the original Pitney Bowes' ' Sapporo
Sapporo
Autumn Gold' elms: [4] ^ Davies, M.(1984). White-letter Hairstreak Project. Newsletter No. 12, Winter 1984/85, West Midlands Branch, Butterfly Conservation. ^ Richard Bland, 'The Downs Observer' in The Bristol Six, March 2016, p.14 ^ "List of plants in the elm collection". Brighton & Hove City Council. Retrieved 23 September 2016. 

v t e

Elm
Elm
species, varieties, hybrids, hybrid cultivars and species cultivars

Species, varieties and subspecies

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

Disputed species and varieties

U. canescens (Grey, grey-leafed or hoary elm) U. elliptica

Hybrids

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

Species cultivars

American elm

American Liberty Ascendens Augustine Aurea Beaverlodge Beebe's Weeping Brandon Burgoyne JFS Prince II = Colonial Spirit College Columnaris Creole Queen Deadfree Delaware Exhibition Fiorei Flick's Spreader Folia Aurea Variegata Hines Incisa Independence Iowa State Jackson Jefferson Kimley Klehmii L'Assomption Lake City Lewis & Clark Littleford Maine Markham Miller Park Minneapolis Park Moline Morden New Harmony Nigricans Patmore Pendula Penn Treaty Princeton Pyramidata Queen City Sheyenne Skinner Upright St. Croix Star Valley Forge Variegata Vase Washington

Cedar elm

Brazos Rim

Chinese elm

A-1 A. Ross Central Park = Central Park Splendor Blizzard BSNUPF = Everclear Burgundy Burnley Select Catlin Chessins Churchyard Cork Bark D.B.Cole Drake Dynasty Ed Wood Elsmo Emer I = Athena Emer II = Allee Emerald Prairie Frosty Garden City Clone Geisha Glory Golden Rey Hallelujah Harzam = Harrison™ Hokkaido Jade Empress King's Choice Littleleaf Lois Hole Matthew Milliken Nire-keyaki Ohio Orange Ribbon Pathfinder Pendens Prairie Shade Prince Richard Red Fall Sabamiki Sagei Seiju Select 380 Sempervirens Small Frye State Fair Stone's Dwarf Taiwan The Thinker Todd True Green UPMTF = Bosque Ware's Yarralumla Yatsubusa Zettler = Heritage Ulmus
Ulmus
parvifolia f. lanceolata

European white elm

Aureovariegata Colorans Helena Ornata Pendula Punctata Urticifolia

Field elm

Ademuz Albo-Dentata Amplifolia Argenteo-Variegata Atinia Variegata Atinia Biltii Boissieri Christine Buisman Concavaefolia Coritana Cretensis Cucullata Cucullata Variegata Dehesa de Amaniel Dehesa de la Villa Dicksonii Dijkwel Erecta Folia Alba-Punctata Glandulosa Goodyeri Hoersholmiensis Holmstruph Hunnybunii Laciniata Lanuginosa Majadahonda Microphylla Pendula Microphylla Purpurea Microphylla Rubra Monumentalis Pendula Picturata Plotii Propendens Punctata Purpurascens Purpurea Retiro Reverti Rugosa Rueppellii Sarniensis Schuurhoek Silvery Gem Sowerbyi Stricta Suberosa Umbraculifera Gracilis Umbraculifera Viminalis Viminalis Aurea Viminalis Betulaefolia Viminalis Gracilis Viminalis Incisa Viminalis Marginata Viminalis Pendula Viminalis Pulverulenta Viminalis Stricta Virgata Webbiana

Japanese elm

Discovery Freedom Jacan JFS-Bieberich = Emerald Sunshine Mitsui Centennial Prospector Reperta Reseda Thomson Validation

Siberian elm

Ansaloni Aurea Aurescens Chinkota Dropmore Dwarf Weeper Green King Hansen Harbin Manchu Mauro Mr. Buzz Park Royal Pendula Pinnato-ramosa Poort Bulten Puszta Pyramidalis Fiorei Variegata Zhonghua Jinye

Winged elm

Lace Parasol

Wych elm

Albo-Variegata Australis Camperdownii Cebennensis Concavaefolia Cornuta Corylifolia Purpurea Corylifolia Dovaei Escaillard Fastigiata Macrophylla Fastigiata Stricta Fastigiata Variegata Firma Flava Gigantea Gittisham Grandidentata Holgeri Horizontalis Insularis Latifolia Latifolia Aurea Latifolia Aureo-Variegata Latifolia Nigricans Luteo Variegata Lutescens Macrophylla Maculata Minor Nana Nigra Nitida Oblongata Pendula Macrophylla Pendula Variegata Pyrenaica Ramulosa Rugosa Spectabilis Superba Tomentosa

Hybrid cultivars

Androssowii Amsterdam Arno Cathedral Clusius Columella Den Haag Dodoens Fiorente Frontier Fuente Umbria Homestead Karagatch Lobel Morfeo Morton Glossy = Triumph Morton Plainsman = Vanguard Morton Red Tip = Danada Charm Morton Stalwart = Commendation Morton = Accolade Nanguen = Lutece New Horizon Patriot Plantyn Plinio Rageth Rebella Rebona Recerta Regal Repura Revera San Zanobi Sapporo
Sapporo
Autumn Gold Sapporo
Sapporo
Gold 2 Stavast Toledo Urban Wanoux = Vada

Dutch elm

Alba Angustifolia Balder Bea Schwarz Belgica Blandford Canadian Giant Cicestria Cinerea Commelin Dampieri Dauvessei Daveyi Dumont Elegantissima Eleganto-Variegata Etrusca Fastigiata Fjerrestad Folia Rhomboidea Freja Fulva Gaujardii Groeneveld Haarlemensis Hillieri Klemmer Loke Macrophylla Aurea Major Microphylla Modiolina Muscaviensis Odin Pioneer Pitteurs Serpentina Smithii Superba Tricolor Tyr Vegeta Viminalis Viscosa Wentworthii Pendula Wredei Ypreau

U. × intermedia

Coolshade Fremont Improved Coolshade Lincoln Rosehill Willis

Unconfirmed derivation cultivars

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 Jalaica Jacqueline Hillier Kansas Hybrid Klemmer Blanc Koopmannii Lombartsii Louis van Houtte Marmorata Monstrosa Myrtifolia Myrtifolia Purpurea Nemoralis Nigrescens Planeroides Planifolia Purpurea Pyramidalis Bertini Pyramidalis Rotundifolia Rubra Rufa Scampstoniensis Sericea Tiliaefolia Tortuosa Turkestanica Variegata Nova Virens

Fossil elms

U. o

.