Cucurbita mixta aka pipian is a species of squash, sometimes known as the cushaw pumpkin. C. mixta is one of the common varieties of pumpkin

Pumpkin

A pumpkin is a gourd-like squash of the genus Cucurbita and the family Cucurbitaceae . It commonly refers to cultivars of any one of the species Cucurbita pepo, Cucurbita mixta, Cucurbita maxima, and Cucurbita moschata, and is native to North America...

 cultivated in the United States. The plant's adaptation to warm climates and resistance to squash borers make it very competitive in the agricultural industry. It is used, especially in the southern states of the US, for use in pies and actually preferred over other pumpkins. It is also grown in the desert southwest by native peoples, especially the Tohono O'odham, where it is especially prized when immature as a summer squash.

C. mixta also has medicinal properties. A liquid emulsion of its seed can act as a vermifuge, and the subsequent use of a laxative

Laxative

Laxatives are foods, compounds, or drugs taken to induce bowel movements or to loosen the stool, most often taken to treat constipation. Certain stimulant, lubricant, and saline laxatives are used to evacuate the colon for rectal and/or bowel examinations, and may be supplemented by enemas under...

can effect an expulsion of parasitic worms.