Populus × jackii Sarg.

This name was accepted following an alternative taxonomy by these authorities:

• A.K.Skvortsov (2010). Taxonomical synopsis of the genus Populus L. in East Europe, North and Central Asia. Byulleten' Glavnogo Botaniceskogo Sada 196: 62-73. [Cited as Populus × jackii.]
• Bailey, C. & al. (2015). Guide to the Vascular Plants of Tennessee: 1-813. University of Tennessee press. [Cited as Populus × jackii.]
• Chadde, S.W. (2019). Minnesota Flora. An illustrated guide to the vascular plants of Minnesota ed. 2: 1-776. Steve W. Chadde. [Cited as Populus × jackii.]
• Flora of North America Editorial Committee (2010). Flora of North America North of Mexico 7: 1-797. Oxford University Press, New York, Oxford. [Cited as Populus × jackii.]
• Meades, S.J. & Brouillet, L. (2019). Annotated Checklist of the Vascular Plants of Newfoundland and Labrador https://newfoundland-labradorflora.ca/checklist/. [Cited as Populus × jackii.]
• Mohlenbrock, R.H. (2014). Vascular Flora of Illinois. A Field Guide, ed. 4: 1-536. Southern Illinois University Press, Carbondale. [Cited as Populus × jackii.]
• Parslow, R. & Bennallick, I. (2017). The new flora of the Isles of Scilly: 1-539. Parslow Press. [Cited as Populus × jackii.]
• Stace, C.A., Preston, C.D. & Pearman, D.A. (2015). Hybrid flora of the British isles: 1-501. Botanical Society of Britain and Ireland. [Cited as Populus × jackii.]