The shallowly domed Notobubon galbanum inflorescence consists of a compound umbel, comprising many small umbels, each with stalked, small flowers radiating from its own centre.

The yellow florets are all positioned in one, curved plane, regularly shaped, bisexual on five-toothed calyces. The five free petals drop off early. The five stamens alternate with the petals, slightly longer than the petals. The ovary is inferior, the style short and thick.

The dry fruits are flattened at the back and narrowly winged on their margins (Bean and Johns, 2005; Mustart, et al, 1997; iNaturalist; http://pza.sanbi.org).