Adenandra marginata subsp. marginata flowers

The flowers of Adenandra marginata subsp. marginata grow in loose, stem tip umbels or umbel-like corymbs on long reddish pedicels. There are two to fifteen flowers in an umbel. The bracts are small, often dropping off early. The calyx lobes are ovate to triangular.

The five-lobed corollas are porcelain-like white inside and pink or red outside, the petal-shape elliptic but slightly variable. The staminodes are hairy, tipped by head-like glands, the stamens hairless or mostly so, and tipped by stalked glands. The red spheres on the white stalks in picture spreading conspicuously may be the glands on the staminodes. The ovary is usually glabrous, with or without stemmed glands. The style recurves.

The fruit capsule is longer than the calyx (iNaturalist; https://www.worldfloraonline.org).