The Temple Institute posted this picture on a article about the red heifer. Notice the green red-eyed creature behind the yellow daffodils.
The daffodil was called the kings spear and is said to grow in the fields of Hades.
Daffodil – In Greek mythology the daffodil is described as a pale yellow deathless kind of lily flower, that overspreads the plains of Hades, and is the favourite food of the dead. The traditional daffodil has a yellow to golden-yellow color all over, and due to breeding the daffodil may be variously colored. Breeders have developed some daffodils with double, triple, or ambiguously multiple rows of petals, and several wild species have double variants. The English name is derived from the flower name, from Latin asphodelus, from Greek asphodelos, meaning “asphodel flower.”
“In Greek legend the asphodel is one of the most famous of the plants connected with the dead and the underworld. Homer describes it as covering the great meadow (ἀσφόδελος λειμών), the haunt of the dead. It was planted on graves, and is often connected with Persephone, who appears crowned with a garland of asphodels. Its general connection with death is due no doubt to the greyish colour of its leaves and its yellowish flowers, which suggest the gloom of the underworld and the pallor of death. The roots were eaten by the poorer Greeks; hence such food was thought good enough for the shades. The asphodel was also supposed to be a remedy for poisonous snake-bites and a specific against sorcery; it was fatal to mice, but preserved pigs from disease.”