Mimetes chrysanthus closed perianths

Transforming stages of the Mimetes chrysanthus flowerheads from buds to flowers are present concurrently at a stem-tip, in sequence from the top down.

The earliest clusters are white-woolly and rounded. When the white wool disappears, a flat-topped head of greenish perianth tips becomes visible. These perianths soon elongate to their mature length, their tips now yellow, the cylinders lower down pale greenish yellow.

Later, the perianth segments split when the thin pollen presenters are freed. They elongate notably, exceeding the length of the perianths that previously enclosed them.

The leaves subtending the flower clusters become longer than the buds, usually not longer than the pollen presenters.

Although the flower clusters are still developing at this stem-tip, it is already growing new leaves above the inflorescence (Vlok and Schutte-Vlok, 2015; iNaturalist; Wikipedia).