Carrion Flowers Trick Flies Into Pollinating

In the plant kingdom, not all flowers rely on sweet nectar and bright, cheerful colors to attract pollinators. The *Stapelia* genus, native to Southern Africa, has perfected a far more sinister form of deception. These plants, often called carrion flowers or starfish flowers, have evolved to masterfully imitate a decaying animal carcass. Their large, fleshy blooms are frequently covered in fine hairs, wrinkles, and mottled patterns of deep red and brown, creating a startlingly realistic impression of rotting flesh. This visual mimicry is powerful, but the true lure is the scent.

The flowers produce a cocktail of volatile sulfur compounds, including dimethyl trisulfide, the very same chemical that gives decomposing meat its foul odor. This scent is irresistible to carrion flies, which are tricked into believing they have found the perfect place to lay their eggs. As a female fly explores the flower's surface, she inadvertently picks up the plant's pollen sacs. When she flies to another nearby carrion flower, she deposits the pollen, ensuring the plant's cross-pollination. While the plant succeeds in its reproductive mission, the story ends tragically for the fly's offspring. The eggs hatch, but the larvae find no nourishing meat and quickly starve, a grim consequence of this brilliant evolutionary ruse.