Right, to the same taxon at the gender level, i.e., the Cucurbita group.
If the plants in your house have similar characteristics to those described in this post, their taxonomic location is something like this:
Kingdom: Plant
Division: Magnoliophyta
Class: Magnoliopside
The family: Cucurbitaceae
Gender: Cucurbita
Species: ?
To identify the species, you can send photos of the leaves and fruits.
I will do that tomorrow. Unfortunately, they are not in a great shape... They got some rain and seem to struggle since then... :/