Tree Nuts

A nut is a fruit consisting of a hard or tough nutshell protecting a single seed, and in botany the term implies that the shell does not open to release the seed. The cited article, titled Nut (fruit) because the title Tree nut redirects to it, names true nuts such as hazelnuts, chestnuts and acorns and notes that walnuts and hickories, including pecans, are difficult to classify. Its toxicity section says nuts used for food are a common source of food allergens, with reactions ranging from mild symptoms to life-threatening anaphylaxis, and that tree nut allergies are distinct from peanut allergy because peanuts are legumes, although experts suggest that a person allergic to peanuts should avoid tree nuts and the reverse. Ingredients the atlas records under the tree nuts allergen value are grouped under this entry.