A supplement on nature and the wild with one of the national papers had a wee nature quiz. Question 3 on fungi was: Which of these is the odd one out and why?
Agaricus xanthodermus, yellow stainer
Boletus edulis, the penny bun
Agaricus arvensis, the horse mushroom
Calvatia gigantea, the giant puffball.
There was a photograph of each type of mushroom too.
