Ulmus 'Fuente Umbria'
| Ulmus 'Fuente Umbria' | |
|---|---|
 'Fuente Umbria' | |
| Genus | Ulmus |
| Cultivar | 'Fuente Umbria' |
| Origin | Spain |
The cultivar Ulmus 'Fuente Umbria' was raised from seed collected in 1995 from an elm resembling Ulmus minor growing in a field at Fuente Umbria west of Valencia (39°25′23″N 0°56′46″W / 39.42306°N 0.94611°W),[1] by researchers at the Escuela Técnica Superior de Ingenieros de Montes, Universidad Politėcnica de Madrid. 'Fuente Umbria' is one of seven cultivars found to have a very high resistance to Dutch Elm Disease, on a par with, if not greater than, the hybrid cultivar 'Sapporo Autumn Gold'. [1]
'Fuente Umbria' was introduced to the UK in 2017, by Hampshire & Isle of Wight Branch, Butterfly Conservation, as part of an assessment of DED-resistant cultivars as potential hosts of the endangered White-letter Hairstreak. [2]
Description
'Fuente Umbria' is comparatively slow growing, achieving a rate of 52 cm per annum in the trials at Puerta de Hierro, Madrid. The branches, which have corky tissue, are erect, forming an irregular crown. The leaves, on 10 mm petioles, are ovate, typically oblique at the base and acuminate at the apex, the average length and width 76 × 45 mm, the margins doubly serrate. Foliar density relative to 'Sapporo Autumn Gold' is described as 'medium'. [1]
Cultivation
The cultivar has been evaluated at four sites across Spain, while a single specimen was planted in 2017 at Butterfly Conservation's elm trial plantation at Great Fontley, in southern Hampshire, England.[2]
Accessions
- Grange Farm Arboretum, Sutton St James, Lincolnshire. One small whip planted 2017.
- Great Fontley Farm, nr. Fareham, Hampshire. Butterfly Conservation elm trial plantation. One small whip planted 2017.
References
- ^ a b c Martín, JA; Solla, A; Venturas, M; Collada, C; Domínguez, J; Miranda, E; Fuentes, P; Burón, M; Iglesias, S; Gil, L (2015-04-01). "Seven Ulmus minor clones tolerant to Ophiostoma novo-ulmi registered as forest reproductive material in Spain". iForest - Biogeosciences and Forestry. 8 (2). Italian Society of Sivilculture and Forest Ecology (SISEF): 172–180. doi:10.3832/ifor1224-008. ISSN 1971-7458.
- ^ a b Brookes, A. H. (2017). Great Fontley Elm Trial, 2017 Report. Butterfly Conservation, Lulworth, UK.