Ulmus americana 'Aurea' explained

The American elm cultivar Ulmus americana 'Aurea' was cloned from a tree discovered by F. L. Temple in Vermont at the end of the 19th century.^{[1] [2]}

Description

The tree was described simply as having yellow foliage.

Pests and diseases

No specific information available, but the species as a whole is highly susceptible to Dutch Elm Disease and Elm Yellows; it is also moderately preferred for feeding and reproduction by the adult Elm Leaf Beetle Xanthogaleruca luteola,^[3] and highly preferred for feeding by the Japanese Beetle Popillia japonica ^{[4] [5]} in the United States.U. americana is also the most susceptible of all the elms to verticillium wilt.^[6]

Cultivation

Young trees are grown in Belgium and London, cloned from a tree (now dead) which grew in Illinois.

Synonymy

• Ulmus americana var. aurea Temple, F. L. ex Rehder , in Bailey: Cycl. Amer. Hort. (4): 1880.

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. Temple, F. L. (1880), in Bailey: Cycl. Amer. Hort. (4): 1880.
3. Miller . Fredric . Ware . George . Resistance of Temperate Chinese Elms (Ulmus spp.) to Feeding by the Adult Elm Leaf Beetle (Coleoptera: Chrysomelidae) . Journal of Economic Entomology . Oxford University Press (OUP) . 94 . 1 . 2001-02-01 . 0022-0493 . 10.1603/0022-0493-94.1.162 . 162–166 . 11233108. free .
4. Miller . Fredric . Ware . George . Jackson . Jennifer . Preference of Temperate Chinese Elms (Ulmus spp.) for the Adult Japanese Beetle (Coleoptera: Scarabaeidae) . Journal of Economic Entomology . Oxford University Press (OUP) . 94 . 2 . 2001-04-01 . 0022-0493 . 10.1603/0022-0493-94.2.445 . 445–448 . 11332837. free .
5. Web site: Elm Leaf Beetle Survey. 17 July 2017. https://web.archive.org/web/20110719132152/http://www.sunshinenursery.com/survey.htm. 2011-07-19.
6. Pegg, G. F. & Brady, B. L. (2002). Verticillium Wilts. CABI Publishing.