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Buckthorns
Most rated Rhamnus records are fire-resistant — 3 of 6 records, including the genus rated as a group. These counts describe the cited records — 6 records carrying 59 evidence rows from 20 cited sources; they do not make one verdict for the genus.
Rated as a group: Buckthorn Rhamnus spp. Fire-resistant Consensus 4 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
-
'Fine Line® Improved' buckthorn Fire-resistant Rhamnus frangula - Espino negro Fire-resistant Rhamnus lycioides
Documented conflict
1 species
Awaiting evidence
2 species
- Rhamnus davurica Awaiting evidence Rhamnus virgata
-
Carolina buckthorn Awaiting evidence Rhamnus caroliniana
About buckthorns
Corpus context. Rhamnus is the directory's #132 largest of 550 genus groups: 6 records carrying 59 evidence rows from 20 cited sources, recorded as shrub, tree , hardy across USDA zones 2–7. Those are corpus facts, not a whole-genus flammability claim.
More about Rhamnus: Wikipedia — external references; not evidence sources.