Ulmus americana 'Klehmii' explained

Ulmus americana 'Klehmii'
Species:	Ulmus americana
Cultivar:	'Klehmii'
Origin:	Klehm Nurseries, Arlington Heights, Illinois

The American Elm cultivar Ulmus americana 'Klehmii' was cloned from a tree growing at Arlington Heights by Mr Charles Klehm, proprietor of the Charles Klehm & Son nursery.^{[1] [2]} As it is unlikely that Klehms would have released two different vase-shaped American white elm cultivars at the same date (1926), and as nurseries introducing Klehms' 'Vase Elm' always introduced its stablemate 'Moline' at the same time, it is probable that Naperville's 'Klehmii' was the same clone as Klehms' 'Vase'.^[3]

Description

'Klehmii' was distinguished by its shapely vase form.

Cultivation

'Klehmii' was marketed from 1929 by the Naperville Nurseries, Naperville, Illinois.^{[4] [5]} It is not known whether it remains in cultivation.

Synonymy

• Ulmus americana 'Klehm': Plant Buyer's Guide, ed. 5, 253, 1949.

Notes and References

1. Green . Peter Shaw . Peter Shaw Green . 1964 . Registration of cultivar names in Ulmus. Arnoldia . 24. 41–80 . 6–8 . . 16 February 2017.
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 . 20 June 2016.
3. https://archive.org/details/1926-04-17-the-dearborn-independent-vol-26-no-26/page/n15/mode/2up H. R. Mosnat, 'Beating the grain of mustard seed: an elm six years planted grows 35 feet tall', The Dearborn Independent (Dearborn, Michigan), 17 April 1926, Vol 26 No 26, p.31
4. https://archive.org/details/CAT31330757/page/6/mode/2up Naperville Nurseries, Naperville, Illinois: General price list, No. 270, fall 1929, p.6
5. http://www.napersettlement.org/history/naperville_nurseries.htm napersettlement.org