Polygala rhinostigma flower

A Polygala rhinostigma flower appearance is dominated by the pair of inner sepals and the white keel crest.

The outer sepals are small, elliptic and tapering to acute tips. The two enlarged, inner sepals are clawed, petal-like and wing-like. Obliquely ovate in shape and pink in colour, they spread when the flowers open. The keel is where the stamens are concealed near the corolla crest at the tip of the lower petal, usually white, sometimes pink. The crest in this species is more finger-like, less feathery than in many other polygalas.

The specific name, rhinostigma, is derived from the Greek words rhinos meaning nose and stigma meaning a mark, possibly referring to the shape of the flower stigma (iNaturalist; https://www.botanicalrealm.com).