Ulmus 'Fuente Umbria'
| Ulmus hybrid | |
|---|---|
| Cultivar | 'Fuente Umbria' |
| Origin | Spain |
The cultivar Ulmus 'Fuente Umbria' was raised from seed collected in 1995 from a tree growing in a field near Valencia by researchers at the Escuela Técnica Superior de Ingenieros de Montes, Universidad Politėcnica de Madrid. 'Fuente Umbria' was one of seven cultivars all believed to be Ulmus minor, 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] However, DNA analysis later revealed that 'Fuente Umbria' had Siberian Elm Ulmus pumila in its ancestry, which disqualified it from use in Spanish forestry.
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.