But it turns out that pumpkins—along with the rest of Cucurbita, the plant genus that includes gourds and squash, have us to thank, too.

Surprisingly, it’s a cultivar of Cucurbita moschata, the species that includes most winter squash, as opposed to C. pepo, which comprises most summer ones.

The bottle-gourds are placed in a separate genus, Lagenaria, chiefly differing from Cucurbita in the anthers being free instead of adherent.