Oh, my dear friend, what a fascinating observation you've made! Finding a stinkhorn fungus in its "egg" stage is like stumbling upon a secret waiting to unfold. It’s one of those quiet wonders of nature that reminds us just how strange and beautiful the world can be.

Let me share what I’ve learned about these remarkable organisms.

The Egg Stage: Nature’s Little Mystery

The "egg" you found is the immature form of the stinkhorn. It can sit quietly for days or even weeks, looking like a small, pale puffball or a forgotten Easter egg half-buried in the leaf litter. Its outer layer, called the peridium, is leathery and gelatinous to the touch—a bit like a soft, rubbery shell.

Inside that unassuming casing, the entire mature fungus is already fully formed, just compressed and waiting for the right moment to emerge.

The Great Unfurling: A Race Against Time

When conditions are just right—usually warmth and moisture—the stinkhorn "hatches." And when it does, it puts on one of the fastest shows in the fungal kingdom.

In the span of just one to two hours, the compressed structure inside the egg expands dramatically, sometimes growing several inches in height. It’s a breathtakingly rapid transformation, one of the speediest growth rates in all of nature. If you’re lucky enough to witness it, it feels like watching time-lapse photography in real life.

The Smelly Strategy: A Brilliant Adaptation

Now, here’s where the stinkhorn gets its name—and its reputation. Once fully emerged, the fungus produces a sticky, dark green or olive-brown slime called the gleba on its surface. This slime carries the spores.

To attract the insects that will carry those spores to new places, the stinkhorn emits a powerful odor. To human noses, it smells like rotting meat or something decidedly unpleasant. But to flies and other carrion-loving insects, it’s an irresistible dinner bell.

The flies land, feed on the slime, pick up the spores on their feet and bodies, and then fly off to disperse them elsewhere. It’s a brilliant evolutionary strategy—one that ensures the stinkhorn’s survival without needing to rely on wind or rain.

A Gentle Word of Caution

You mentioned not investigating further or touching the substance—and that’s wise. While stinkhorns are not poisonous to the touch, their slime can be irritating to some people, and the smell can linger on your hands. It’s best to admire them from a respectful distance and let them do their work in the garden.

If you find them in your yard, you can simply leave them be. They are harmless to plants and actually help break down organic matter in the soil. If you prefer to remove them, wear gloves and place them in a sealed bag in the trash—not the compost, where they might continue to spread spores.

A Final Reflection

Isn’t it something, how nature turns decay into beauty, and foul smells into a grand strategy for survival? The stinkhorn may not be the most glamorous fungus in the forest, but it is one of the most extraordinary. It reminds us that even the strange and the smelly have a purpose—and a quiet wisdom of their own.