Ulmus americana 'Augustine'

The American elm cultivar Ulmus americana 'Augustine' was originally selected in Bloomington, Illinois, in 1927.[1]

Ulmus americana 'Augustine'
SpeciesUlmus americana
Cultivar'Augustine'
OriginBloomington, Illinois, US

Description

'Augustine' is a fastigiate, vigorous tree distinguished by its thicker branches and larger, more deeply toothed leaves.[2][3]

Pests and diseases

'Augustine' has proven particularly susceptible to Dutch elm disease, exhibiting 36% crown dieback in one year after inoculation with the pathogen.[4] The species is also highly susceptible to Elm Yellows and is also moderately preferred for feeding and reproduction by the adult Elm Leaf Beetle Xanthogaleruca luteola,[5] and highly preferred for feeding by the Japanese Beetle Popillia japonica [6][7] in the United States. U. americana is also the most susceptible of all the elms to verticillium wilt.[8]

Cultivation

The tree is not known to have been cultivated beyond the United States, where it is no longer in commerce.

Synonymy
  • 'Augustine Ascending': Weston, in Horticulture, II.30: 448, 1952.

Accessions

North America

References
  1. Green, Peter Shaw (1964). "Registration of cultivar names in Ulmus". Arnoldia. Arnold Arboretum, Harvard University. 24 (6–8): 41–80. Retrieved 16 February 2017.
  2. Ulmus americana 'Augustine' photographs in University of Michigan Plant Encyclopaedia, saylorplants.com/pd_bigpic.asp?pid=3214&pic_id=pic16, saylorplants.com/pd_bigpic.asp?pid=1931&pic_id=pic16
  3. Photograph of 'Augustine' elms on the National Mall, Washington DC: 'Elms of the Monumental Core', James L. Sherald, National Park Service (2009), p.36 [www.nps.gov/.../ElmsoftheMonuCore_HistandMgmtPlan_122009.pdf]
  4. Townsend, A. M., Bentz, S. E., and Douglass L. W. (2005). Evaluation of 19 American Elm Clones for Tolerance to Dutch Elm Disease Archived 2005-05-11 at the Wayback Machine. Journal of Environmental Horticulture, March 2005, Horticultural Research Institute, Washington, D.C.
  5. Miller, Fredric; Ware, George (2001-02-01). "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): 162–166. doi:10.1603/0022-0493-94.1.162. ISSN 0022-0493. PMID 11233108.
  6. Miller, Fredric; Ware, George; Jackson, Jennifer (2001-04-01). "Preference of Temperate Chinese Elms ( Ulmus spp.) for the Adult Japanese Beetle (Coleoptera: Scarabaeidae)". Journal of Economic Entomology. Oxford University Press (OUP). 94 (2): 445–448. doi:10.1603/0022-0493-94.2.445. ISSN 0022-0493. PMID 11332837.
  7. "Elm Leaf Beetle Survey". Archived from the original on 2011-07-19. Retrieved 17 July 2017.
  8. Pegg, G. F. & Brady, B. L. (2002). Verticillium Wilts. CABI Publishing. ISBN 0-85199-529-2
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