Ulmus americana 'Littleford'

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Ulmus americana
Cultivar 'Littleford'
Origin Sherman Nursery, Charles City, Iowa, USA

The American Elm cultivar Ulmus americana 'Littleford' was cloned from a tree in Hinsdale, Illinois, circa 1915 and first released in 1927.

Description[edit]

The tree is narrowly vase-shaped with larger and heavier leaves.

Pests and diseases[edit]

The clone's resistance to Dutch Elm Disease is not known, but the species is highly susceptible to the disease and Elm Yellows; it is also moderately preferred for feeding and reproduction by the adult Elm Leaf Beetle Xanthogaleruca luteola [1] [1], and highly preferred for feeding by the Japanese Beetle Popillia japonica [2] [2] [3] in the United States. U. americana is also the most susceptible of all the elms to verticillium wilt.[3]

Cultivation[edit]

'Littleford' was marketed by the Sherman Nursery, Charles City, Iowa, as late as 1957, but is no longer listed by that emporium or any other.[4] The tree is not known to have been introduced to Europe or Australasia.

Synonymy[edit]

  • Ulmus americana var. Littlefordii: Bailey & Bailey, Hortus Second, 746, 747, 1941.

Accessions[edit]

North America

References[edit]

  1. ^ Miller, F. and Ware, G. (2001). Resistance of Temperate Chinese Elms (Ulmuss spp.) to Feeding of the Adult Elm Leaf Beetle (Coleoptera: Chrysomelidae). Journal of Economic Entomology 94 (1): 162-166. 2001. Entom. Soc.of America.
  2. ^ Miller, F., Ware, G. and Jackson, J. (2001). Preference of Temperate Chinese Elms (Ulmuss spp.) for the Feeding of the Japanese Beetle (Coleoptera: Scarabaeidae). Journal of Economic Entomology 94 (2). pp 445-448. 2001. Entom. Soc.of America.
  3. ^ Pegg, G. F. & Brady, B. L. (2002). Verticillium Wilts. CABI Publishing. ISBN 0-85199-529-2
  4. ^ Green, Peter Shaw (1964). "Registration of cultivar names in Ulmus". Arnoldia. Arnold Arboretum, Harvard University. 24 (6–8): 41–80. Retrieved 16 February 2017.