Ulmus americana 'Iowa State'
From Wikipedia, the free encyclopedia
| Ulmus americana |
|---|
| Cultivar |
| 'Iowa State' |
| Origin |
| Iowa State University, USA |
The American Elm Ulmus americana 'Iowa State' was discovered by Professor Alexander (Sandy) McNabb of Iowa State University as the sole surviving tree in 40 acres of diseased elm at Burlington [1]. Reported in the American Horticulturist News Edition, 63(5):4, 1984, it was described as "a natural selection from southeastern Iowa, highly resistant to Dutch elm disease when inoculated". The tree is possessed of a fastigiate, thickly-branched habit, but has relatively weak crotches rendering it prone to splitting. Specimens were subsequently given to Mr. Donald C. Willeke of Minneapolis, Minnesota, former Chairman of the Minnesota and U. S. Urban Forest Councils, who planted them in that city. Most of these trees still survive; one specimen planted in 1977 attained a height of over 20 m and a d. b. h. (diameter at breast height) of 50 cm in 30 years. 'Iowa State' is not known to have been commerially propagated.
The tree is not known to have been introduced to Europe or Australasia.
[edit] Synonymy
- 'Iowa State University': Anon.
