Petrocodon dahuaensis, a new species from a limestone area of Guangxi, China, is de-
scribed and illustrated. The new species is similar to P. asterostriatus but differs in its
leaf blade, cordate to subrounded, margin crenate to serrate; bracts, bracteoles, and
calyx smaller; corolla purple, base straight to slightly inflated; filaments purple; and style
densely glandular-puberulent. Molecular evidence also supports its close relationship
with P. asterostriatus. According to the IUCN Red List Categories and Criteria, the provi-
sional conservation status of P. dahuaensis is assessed as Data Deficient (DD).
Abstract