Most common is Lagenaria siceraria, the family commonly called hard shell gourds.

thank you farmerdilla, this seed had to have come from a bird, the vine is huge, and still growing.

Alberta

Could you send me a pic of the fruit when it starts producing? I have been looking for seeds for one that we used to grow and if you pick it before the shell gets too hard and peel it they are great for stir fries and soups. Mine looked sort of like a birdhouse gourd but didn't have much indentation at the neck.