In the past many mycologists, especially Boudier in France, named forms of Morchella as different species based on colour and shape; however, current thinking is that these differences do not warrant specific rank. Morels have long been prized as one of the most important edible fungi, possibly second only to truffles, and prices in markets reflect this. All morels need to be cooked; eaten raw, they have been found to cause stomach upsets.