The
American Elm cultivar ''Ulmus americana'' 'Fiorei' was raised by the Charles Fiore Nurseries,
Prairie View,
Illinois, before 1949, and first listed as 'Fiorii', Fiore Elm, without description. It is no longer listed by the company.
Description
The tree has a narrow form with dense, heavy foliage and a smooth bark.
Pests and diseases
No specific information available, but the species as a whole is highly susceptible to
Dutch Elm Disease and
Elm Yellows
Elm yellows is a plant disease of elm trees that is spread by leafhoppers or by root grafts."Elm Yellows." Elmcare.Com. 19 Mar. 2008 . Elm yellows, also known as elm phloem necrosis, is very aggressive, with no known cure. Elm yellows occurs in the ...
; it is also moderately preferred for feeding and reproduction by the adult Elm Leaf Beetle ''
Xanthogaleruca luteola'',
and highly preferred for feeding by the Japanese Beetle ''
Popillia japonica
The Japanese beetle (''Popillia japonica'') is a species of scarab beetle. The adult measures in length and in width, has iridescent copper-colored elytra and a green thorax and head. It is not very destructive in Japan (where it is control ...
''
in the United States.
''U. americana'' is also the most susceptible of all the elms to
verticillium wilt
Verticillium wilt is a wilt disease affecting over 350 species of eudicot plants. It is caused by six species of ''Verticillium'' fungi: ''V. dahliae'', ''V. albo-atrum'', ''V. longisporum'', ''V. nubilum'', ''V. theobromae'' and ''V. tricorpu ...
.
[Pegg, G. F. & Brady, B. L. (2002). ''Verticillium Wilts''. CABI Publishing. ]
Cultivation
Only one tree is known to survive in North America (see Accessions); the tree is not known to have been introduced to
Europe or
Australasia.
Synonymy
*''Ulmus americana'' 'Fastigiata': Charles Fiore Nurseries, Prairie View, Illinois, Wholesale Cat. p. 33, 1959-60. (Latin epithet considered illegitimate as proposed after 1 January 1959).
Accessions
North America
*
Arnold Arboretum
The Arnold Arboretum of Harvard University is a botanical research institution and free public park, located in the Jamaica Plain and Roslindale neighborhoods of Boston, Massachusetts. Established in 1872, it is the oldest public arboretum in N ...
, US. Acc. no. 1238-61.
References
{{Elm species, varieties, hybrids, hybrid cultivars and species cultivars , state=collapsed
American elm cultivar
Ulmus articles missing images
Ulmus