Every rated Hemerocallis record is fire-resistant — 3 of 4 records, including the genus rated as a group; none is condemned.
These counts describe the cited records — 4 records carrying
16 evidence rows from 16 cited
sources; they do not make one verdict for the genus.
Corpus context. Hemerocallis is the directory's #204 largest of
550 genus groups: 4 records carrying
16 evidence rows from 16 cited
sources, recorded as perennial , hardy across USDA zones 3–9.
Those are corpus facts, not a whole-genus flammability claim.
More about Hemerocallis: Wikipedia
— external references; not evidence sources.