Fruits related to nuts or in the nut family?

[Cayman Islands]

Hi all ... my 5 year old son had an anaphylactic reaction to sunflower seed butter today - does anyone here know what FRUITS are related to nuts? Now that I realize he's allergic to seeds I'm wondering about fruits that are related such as mango being from the cashew family since he does eat a lot of fruit. He's also allergic to dairy, casein, gluten, soy, beans, the list goes on ... I am having trouble finding this info online myself.

Thank you!

Michele

[Non]

peaches, nectarines, etc. have got the bitter almonds in them, and almond.

[sport]

It sounds to me as if perhaps all fruit that have that single hard stone in the middle may qualify.