Columnaris (elm cultivar)

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Ulmus americana
Cultivar
Columnaris
Origin
Consesus Lake, New York, USA

The American Elm U. americana Columnaris has a columnar form [1], and was propagated from a tree found by Mr John Dunbar at Conesus Lake, New York, before 1920. NB. Not to be confused with U. americana var. columnaris Rehder, J. Arnold Arbor. 3: 42, 1922.

Contents 1 Arboreta etc. accessions 1.1 North America 2 References 3 External links

[edit] Arboreta etc. accessions

[edit] North America

• Morton Arboretum, acc. no. 1041-41, (graft). Specimen in the Columnar Tree Section reputed to be "in good health" in the autumn of 2006.

[edit] References

• Green, P. S. (1964). Registration of cultivar names in Ulmus. Arnoldia, Vol. 24. Arnold Arboretum, Harvard University. [2]

[edit] External links

• http://www.bgci.org/plant_search.php?action=Find&ftrGenus=Ulmus&ftrRedList=&ftrSpecies=&ftrRedList1997=&ftrEpithet=&ftrCWR=&x=41&y=19NB. Botanic Gardens Conservation International register
• http://redwood.mortonarb.org/PageBuilder?cid=2&qid=13 Morton Arboretum catalogue