| 词条 | Ulmus parvifolia 'The Thinker' |
| 释义 |
| name = Ulmus parvifolia 'The Thinker' | species = Ulmus parvifolia | cultivar = 'The Thinker' | origin = US }} 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. DescriptionThe tree is noted for its rounded habit and exfoliating bark.[1][2] Pests and diseasesThe 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'The Thinker' is not known to be in cultivation beyond North America. EtymologyThe tree was named for its proximity on campus to the copy of the eponymous statue by Auguste Rodin. AccessionsNone known. NurseriesNone known. References1. ^Dirr, M. A. Nursery Manager, 9(6): 30-33, 1993. {{Elm species, varieties, hybrids, hybrid cultivars and species cultivars |state=collapsed}}{{Ulmaceae-stub}}2. ^{{cite journal |last1=Santamour |first1=Frank S. |last2=Bentz |first2= Susan E. |date=May 1995 |title=Updated Checklist of Elm (Ulmus) Cultivars for use in North America|url=http://joa.isa-arbor.com/request.asp?JournalID=1&ArticleID=2673&Type=2|journal=Journal of Arboriculture |volume=21 |number=3|pages=122–131 |access-date=20 June 2016}} 3. ^{{Cite web|url=http://www.sunshinenursery.com/survey.htm|access-date=17 July 2017|archiveurl=https://web.archive.org/web/20110719132152/http://www.sunshinenursery.com/survey.htm|title=Elm Leaf Beetle Survey|archive-date=2011-07-19}} 3 : Chinese elm cultivar|Ulmus articles missing images|Ulmus |
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