This is a death cap (Amanita phalloides), which resembles a variety of edible mushrooms. Its not.
It looks edible, but it's not. They call it a "death cap." Amanita phalloides/Shutterstock

Go here and look at the poster that's being distributed in hospitals in Germany right now. And read the reporting:

Desperate migrants traveling for days with little to eat may have resorted to foraging for food as they made their way across Europe, where they hope to find asylum.

Except what looks like an edible mushroom in one place may be a very dangerous other kind of mushroom in another place. According to National Geographic in 2011, only 7 percent of fungi have even been identified by scientists. Many appear the same. Some are quite dangerous. I went mushroom-hunting once for a Stranger feature and had a full-on death anxiety flip-out.

So the people who are literally running across the earth to save their lives and their families are starving and start foraging for food only to find out that the mushrooms they're eating just to stay alive aren't the mushrooms they thought. The kind of mushroom they are accidentally eating? Death caps.

The death cap (Amanita phalloides) resembles several varieties of edible mushrooms, making it particularly dangerous to people who are unfamiliar with the local terrain... The death cap is an invasive species in the United States. It typically poisons a few people a year in California, often immigrants from Southeast Asia who confuse it with paddy straw mushrooms from their homelands, according to Anne Pringle, a biologist at the University of Wisconsin, Madison, who studies toxic mushrooms.

It takes a few hours for the effects to kick in, making these mushrooms all the more dangerous. The poster in the German hospital tells people who feel they may have been poisoned:

In case of suspected mushroom poisoning, please report immediately to the nearest hospital. Do not forget to bring along remnants of consumed mushrooms or vomit. This facilitates the determination of the cause of poisoning.

To reiterate: (1) The European refugee crisis is real, and (2) You are very lucky and ought to be grateful if you are not caught up in it.