Looking for info and sources for some Mexican curbits

I’m interested in learning more about some Cucurbita that are native to Mexico; Cucurbita pedatifolia, C. X scabridifolia, C. radicans, and C. lundelliana. (This last is an annual, the others perennial.) All I know about them is that they grow wild in Mexico.

Does anyone have any experience with these plants? Is the fruit at all edible? Do the plants have a strong smell or other undesirable qualities? What ecosystems do they inhabit?

Does anyone know of a source for seed of any of these species?