The bright blue to purplish blue Spetaea lachenaliiflora flowers bear six narrow tepals, joined at the base in a cup-shape or bell-shape, and spreading their lobe tips above, sometimes recurving them. The tepals sometimes have white lateral bands. The flowers are about 1 cm long. The tepals tend to persist into the fruiting stage.
The six stamens on long white or blue, exserted filaments bear dark anthers. The filaments are joined low down. The ovary is superior, the tepals and stamens arising from below it.
The ovoid seeds are black, each with a prominent whitish hilum. A hilum is the attachment point scar marking where the seed was attached to the parent plant via the funiculus, the stalk connecting the seed to the ovary (Manning, 2007; Bond and Goldblatt, 1984; iNaturalist; https://biologyinsights.com).