Cannabaceae

Ulmus parvifolia 'The Thinker'
SpeciesUlmus parvifolia
Cultivar'The Thinker'
OriginUS

The Chinese elm cultivar Ulmus parvifolia 'The Thinker' was selected by M. Hayman from a tree on the campus of the University of Louisville, Kentucky.

Description[edit]

The tree is noted for its rounded habit and exfoliating bark.[1][2]

Pests and diseases[edit]

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]

Cultivation[edit]

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

Etymology[edit]

The tree was named for its proximity on campus to the copy of the eponymous statue by Auguste Rodin.

Accessions[edit]

None known.

References[edit]

  1. ^ Dirr, M. A. Nursery Manager, 9(6): 30-33, 1993.
  2. ^ Santamour, Frank S.; Bentz, Susan E. (May 1995). "Updated Checklist of Elm (Ulmus) Cultivars for use in North America". Journal of Arboriculture. 21 (3): 122–131. Retrieved 20 June 2016.
  3. ^ "Elm Leaf Beetle Survey". Archived from the original on 2011-07-19. Retrieved 17 July 2017.



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