What is nicotiana quadrivalvis?

Nicotiana quadrivalvis, commonly known as Indian tobacco, is a species of flowering plant in the nightshade family, Solanaceae, native to the southwestern United States and northern Mexico. It is a perennial herbaceous plant that can grow up to 1 meter tall. The leaves are simple, alternate, and ovate in shape, with a length of 5-15 cm and a width of 3-10 cm. The flowers are small and white, with a tube-shaped corolla that is about 2-3 cm long. The fruit is a capsule that contains many small seeds. Nicotiana quadrivalvis is known for its use in traditional Native American medicine for various ailments, such as respiratory problems and insect bites. The plant also contains nicotine, a potent alkaloid that is used for tobacco production. However, the medicinal use of the plant should not be confused with the harmful effects of tobacco consumption.