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Ninebarks
Every rated Physocarpus record is fire-resistant — 3 of 5 records, including the genus rated as a group; none is condemned. These counts describe the cited records — 5 records carrying 20 evidence rows from 18 cited sources; they do not make one verdict for the genus.
Rated as a group: Ninebark Physocarpus Fire-resistant Limited evidence 2 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
2 species
-
Ninebark Fire-resistant Physocarpus opulifolius - Pacific ninebark Fire-resistant Physocarpus capitatus
Awaiting evidence
2 species
-
Mountain ninebark Awaiting evidence Physocarpus monogynus -
Ninebark Awaiting evidence Physocarpus malvaceus
About ninebarks
Corpus context. Physocarpus is the directory's #168 largest of 550 genus groups: 5 records carrying 20 evidence rows from 18 cited sources, recorded as shrub , hardy across USDA zones 3–7. Those are corpus facts, not a whole-genus flammability claim.
More about Physocarpus: Wikipedia — external references; not evidence sources.