Boronia section Corynophyllae Duretto & Heslewood, sect. nov.

Type: Boronia corynophylla Paul G.Wilson.

Differs from sections Algidae and Alatae by having simple leaves (v. imparipinnate or bipinnate) and exfoliating branchlets (v. smooth).

Hairs simple. Branches, including cortex, not articulated (continuous) at nodes, smooth and not obviously glandular, scarcely puberulous, with exfoliating cuticle that gives the branches a glaucous appearance. Leaves opposite–decussate, simple. Inflorescence terminal, 1(2 or 3)-flowered; peduncle absent or minute; bracts and bracteoles persistent. Sepals imbricate in bud; persistence unknown. Petals valvate in bud, multiveined from base, without a subterminal apiculum on abaxial surface; persistence unknown. Staminal filaments pilose, swollen and verrucose towards apex, with tip appearing subterminal adaxially. Stigma minute, as wide as or slightly wider than style. Seed not seen.

A monotypic section confined to south-western Australia.