The

Chinese elm ''Ulmus parvifolia'', commonly known as the Chinese elm or lacebark elm, is a species native to eastern Asia, including China, India, Japan, Korea, Vietnam,Fu, L., Xin, Y. & Whittemore, A. (2002)Ulmaceae in Wu, Z. & Raven, P. (eds) ''Flora of Chi ...

cultivar A cultivar is a kind of Horticulture, cultivated plant that people have selected for desired phenotypic trait, traits and which retains those traits when Plant propagation, propagated. Methods used to propagate cultivars include division, root a ...

''Ulmus parvifolia'' '

The Thinker ''The Thinker'' (), by Auguste Rodin, is a bronze sculpture depicting a Heroic nudity, nude male figure of heroic size, seated on a large rock, leaning forward, right elbow placed upon the left thigh, back of the right hand supporting the chin ...

' was selected by M. Hayman from a tree on the campus of the

University of Louisville The University of Louisville (UofL) is a public university, public research university in Louisville, Kentucky, United States. It is part of the Kentucky state university system. Chartered in 1798 as the Jefferson Seminary, it became in the 19t ...

Kentucky Kentucky (, ), officially the Commonwealth of Kentucky, is a landlocked U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders Illinois, Indiana, and Ohio to the north, West Virginia to the ...

, and described in 1993.

Description

The tree is noted for its rounded habit and exfoliating bark.Dirr, M. A. ''Nursery Manager'', 9(6): 30-33, 1993.

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 ''Xanthogaleruca luteola'', commonly known as the elm-leaf beetle, is a beetle species in the family Chrysomelidae that is native to Europe but invasive in other parts of the world.http://cisr.ucr.edu/elm_leaf_beetle.html - Center for Invasive ...

''.

Cultivation

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

Etymology

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

Auguste Rodin François Auguste René Rodin (; ; 12 November 184017 November 1917) was a French sculptor generally considered the founder of modern sculpture. He was schooled traditionally and took a craftsman-like approach to his work. Rodin possessed a u ...

Accessions

None known.

References

Chinese elm cultivar Ulmus articles missing images Ulmus {{Ulmaceae-stub