Ulmus americana 'Augustine'

Infobox Cultivar | name = "Ulmus americana"
cultivar = 'Augustine'
origin = Bloomington, Illinois, USAThe American Elm "Ulmus americana" cultivar 'Augustine' was originally selected in Bloomington, Illinois, in 1927 Green, P. S. (1964). Registration of cultivar names in Ulmus. "Arnoldia", Vol. 24. Arnold Arboretum, Harvard University. [http://arnoldia.arboretum.harvard.edu/pdf/articles/1605.pdf] ] .

Description

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

Pests and diseases

'Augustine' has proven particularly susceptible to Dutch elm disease, exhibiting 36 % crown dieback in one year after inoculation with the disease's causal fungus Townsend, A. M., Bentz, S. E., and Douglass L. W. (2005). [http://www.elmpost.org/19elms.pdf Evaluation of 19 American Elm Clones for Tolerance to Dutch Elm Disease] . "Journal of Environmental Horticulture", March 2005, Horticultural Research Institute, Washington, D.C.] .

Cultivation

The tree it is not known to have been cultivated beyond the USA.

ynonymy

*'Augustine Ascending': Weston, in "Horticulture", II.30: 448, 1952.

Accessions

North America

*Longwood Gardens, acc. no. 1959-2682.
*Bartlett Tree Experts [http://www.bartlett.com/au100.cfm] , acc. nos. 1368, L 332, (as Augustine Ascending).

References