Nearing the end of flowering, these Lyperia tristis corollas are first losing colour from darkening veins, then general browning of the lobes and eventually the disappearance of their lobes completely.
The green, thickened top part of the corolla tube is clearly in view once the lobes are gone. It is here, in the dilated throat where the short stigma sits at the top of its long style and the four stamens in unequal pairs emerge from the tube wall.
The five-lobed, two-lipped, green calyces are visible below the corollas in the stem-tip raceme (Vlok and Schutte-Vlok, 2015; Manning, 2007; Leistner, (Ed.), 2000; iNaturalist).