Ulmus americana 'Sheyenne' (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Ulmus americana 'Sheyenne'" in English language version.

refsWebsite

Global rank English rank

6^th place

6^th place

low place

low place

1bismarcknd.gov

low place

low place

438^th place

336^th place

archive.org

'Select list of hardy plants, trees, etc.', Northwest Nursery Co., Valley City, North Dakota, 1941, p.3
'Aristocrats of northern gardens : a selected list of the best up-to-date dependable varieties', Northwest Nursery Company, Valley City, North Dakota, 1944, p.8
Catalog of the Northwest Nursery Co. of Valley City, North Dakota, 1915, p.8

bismarcknd.gov

Dutch Elm Disease, bismarcknd.gov

isa-arbor.com

joa.isa-arbor.com

Santamour, Frank S.; Bentz, Susan E. (May 1995). "Updated Checklist of Elm (Ulmus) Cultivars for use in North America". Journal of Arboriculture. 21 (3): 122–131. Retrieved 20 June 2016.

usda.gov

fs.usda.gov

Ulmus americana range map, Forest Service, US Dept. of Agriculture, fs.usda.gov