Morel is not really a mushroom, but is easily recognise by its brown, sponge-like cap, pitted with hollows where the spores are produced. Morels can be found in woodland clearings in spring to early summer. Morels are found, dried or canned, and sometimes fresh in good food shops.
Dowell, P., Bailey, A. (1980) The Book of Ingredients, Dorling Kindersley. ISBN 0718119150.