It's a Mycological Easter egg hunt, a gathering of mushrooms that come from eggs!

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You've found Phytophthora infestans, cause of late blight of potato and the Irish potato famine! It another water mold, in the Oomycota-- literally, the egg fungi.

Phytophthora infestans oosporePhytophthora infestans sporangia poking out of a potato leaf

Phytophthora infestans is the cause of a terrible disease called late blight of potato. This organism ( as well as social problems) caused over a milion people to starve to death in 1845-1846 in Ireland. You can read more about the history of the famine on this page.

This organism is one of those outcasts that used to be considered a fungus, but no longer is. We now place it, along with other members of the Oomycota, in the Kingdom Protista, or the Stramenopila, which aslo contains the brown algae and diatoms, on this page on late blight of potato.

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