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this is what I found: Cucurbita maxima
Pumpkin is botanically known as Cucrbita pepo. Its leaf is palmate and alternate.
The common pumpkin is genus Cucurbita.
Most are Cucurbita pepo or Cucurbita mixta. The giant pumpkin is Cucurbita maxima. Some are cultivars of Cucurbita moschata (butternut squash).
Cucurbita radicans was created in 1866.
The botanical name for pumpkin is Cucurbita Pepo.Pumpkin is a kind of squash vegetable.