The American Elm

cultivar A cultivar is a type of cultivated plant that people have selected for desired traits and when propagated retain those traits. Methods used to propagate cultivars include: division, root and stem cuttings, offsets, grafting, tissue culture, ...

''Ulmus americana'' 'Klehmii' was

cloned Cloning is the process of producing individual organisms with identical or virtually identical DNA, either by natural or artificial means. In nature, some organisms produce clones through asexual reproduction. In the field of biotechnology, c ...

from a tree growing at Arlington Heights by Mr Charles Klehm, proprietor of the Charles Klehm & Son nursery. 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'.

Description

'Klehmii' was distinguished by its shapely vase form.

Cultivation

'Klehmii' was marketed from 1929 by the Naperville Nurseries,

Naperville Naperville ( ) is a city in DuPage and Will counties in the U.S. state of Illinois. It is in the Chicago metro area, west of the city. Naperville was founded in 1831 by Joseph Naper. The city was established by the banks of the DuPage river, ...

Illinois Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. Its largest metropolitan areas include the Chicago metropolitan area, and the Metro East section, of Greater St. Louis. Other smaller metropolita ...

.napersettlement.org
/ref> It is not known whether it remains in cultivation.

Synonymy

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

References

{{Elm species, varieties, hybrids, hybrid cultivars and species cultivars , state=collapsed American elm cultivar Ulmus articles missing images Ulmus