Brothers and Mushrooms by Mary Louisa Molesworth

Mamma was very fond of mushrooms. I don't mean to say that she was a greedy person or fond of eating, but if she _had_ a weakness, it was for mushrooms. When she was a little girl, she had lived in a country place where they grew in abundance, and she had often told the children how delightful it was to go mushroom gathering, how pretty the creamy-white heads looked, sometimes almost hidden in the grass, like eggs in a mossy nest, and what shrieks of fun and eagerness used to be heard when some specially fine one was suddenly caught sight of.

But Mamma's _own_ children, Lancey and Dick -- Mamma was not very rich in children, she had only these two little sturdy boys, Lancey was nine and Dick was seven -- had never had the good fortune to live in a mushroom country. All they knew of mushrooms was when they sometimes happened to catch sight of them in the kitchen, when cook had bought a little basket of them, paying very dear for it, no doubt, because "Missis was so partial to them. " And there was great rejoicing, as you can fancy, when one autumn Mamma told her little boys that they were going down into the country to spend September with an old aunt, who lived not far from where Mamma herself had lived when she "was a little girl."