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- Populus tremuloides (category Populus)regions. Populus tremuloides hybridizes with both the native P. grandidentata (P. ×smithii B. Boivin) and the Eurasian P. alba (P. ×heimburgeri B. Boivin)8 KB (974 words) - 22:31, 5 November 2020
- Populus grandidentata (category Populus)commonly with both P. grandidentata, forming P. ×rouleauiana B. Boivin, and P. tremuloides, forming P. ×heimburgeri B. Boivin, in southeastern Canada and9 KB (1,195 words) - 22:31, 5 November 2020