Ulmus parvifolia 'Pathfinder'

Ulmus parvifolia 'Pathfinder'
SpeciesUlmus parvifolia
Cultivar'Pathfinder'
OriginUS

The Chinese Elm cultivar Ulmus parvifolia 'Pathfinder' was raised by A. M. Townsend of the USDA National Arboretum and registered in 1990.

Description

The tree is of modest proportions, rarely reaching > 11 m in height, with a crown slightly less in diameter. The leaves are a glossy yellow-green, and variously described as turning 'grayish red' or 'brilliant red' in autumn. The trunk sports the typical mottled bark.[1][2]

Pests and diseases

The species and its cultivars are highly resistant, but not immune, to Dutch elm disease, and unaffected by the Elm Leaf Beetle Xanthogaleruca luteola.[3] However, tolerance of Elm Yellows in the USA was found to be poor. [4]

Cultivation

'Pathfinder' is not known to be in cultivation beyond North America.

Accessions

North America

References

  1. ^ Amer. Nurseryman, 175(4): 42, 1992.
  2. ^ Spongberg, S. A. (1991), HortScience 26: 476, 1991.
  3. ^ "Elm Leaf Beetle Survey". Archived from the original on 2011-07-19. Retrieved 17 July 2017.
  4. ^ Sinclair, W. A., Townsend, A. M., Griffiths, H. M., & Whitlow, T. H. (2000). Responses of six Eurasian Ulmus cultivars to a North American elm yellows phytoplasma. Plant disease, Vol. 84, No.12, 1266-1270. American Phytopathological Society, St. Paul, MN
  5. ^ U. parvifolia 'Pathfinder', Chicago Botanic Garden; chicagobotanic.org



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