The cucurbit is the base component of the alembic still described in the surviving Greek alchemical writings of late antiquity and fixed into the standard two-vessel form by Arabic alchemists of the eighth and ninth centuries. Its Latin name is entirely descriptive rather than honoring any inventor: cucurbita simply means "gourd," the same root that gives English "cucurbit" as the botanical family name for squashes and melons, chosen because the rounded pot resembled the hollowed-out gourds used as containers in the ancient Mediterranean world.
Because the cucurbit was the workhorse half of the alembic rather than its most visually distinctive part, it rarely appears named on its own in period illustrations, which usually label the whole assembled still. It did not survive as a separate named object into the modern laboratory the way the retort or the receiver did; instead its function was absorbed into the boiling flask of a standard distillation setup, the round-bottomed vessel that sits over the heat source while a separate condenser, rather than a fitted head, does the work the cucurbit's cap once did. The idea it embodies, that the vessel taking direct heat should be separate from the vessel doing the condensing, remains built into every laboratory distillation apparatus in use today.