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Cottonwoods
Every rated Populus record is fire-resistant — 8 of 12 records, including the genus rated as a group; none is condemned. These counts describe the cited records — 12 records carrying 135 evidence rows from 47 cited sources; they do not make one verdict for the genus.
Rated as a group: Poplar Populus sp. Fire-resistant Majority — dissent on page 25 sources rate the genus as a
whole. Species evidence never rolls upward into a genus verdict, and genus claims never
override a species record.
› Fire-resistant
7 species
-
Quaking aspen Fire-resistant Populus tremuloides -
Lombardy poplar Fire-resistant Populus nigra 'Italica' -
White poplar Fire-resistant Populus alba -
Largetoothed aspen Fire-resistant Populus grandidentata -
Western balsam poplar Fire-resistant Populus trichocarpa -
Cottonwood Fire-resistant Populus deltoides -
narrow-leaf cottonwood Fire-resistant Populus angustifolia
Awaiting evidence
4 species
- Populus canadensis Awaiting evidence Populus canadensis
- Populus suaveolens Awaiting evidence Populus suaveolens
- Populus davidiana Awaiting evidence Populus tremula
-
lanceleaf cottonwood Awaiting evidence Populus acuminata
About cottonwoods
Corpus context. Populus is the directory's #41 largest of 550 genus groups: 12 records carrying 135 evidence rows from 47 cited sources, recorded as tree , hardy across USDA zones 1–8. Those are corpus facts, not a whole-genus flammability claim.
More about Populus: Wikipedia — external references; not evidence sources.