Cinnamomum camphora belongs to the order Laurales and the family Lauraceae. The tree is native to areas including China, Japan, Taiwan and Korea, and is the source of camphor, which is used in cooking, medicine, incense and as an insect repellant. The camphor tree also plays an important role in the Hayao Miyazaki children's movie, My Neighbor Totoro.
Magnolia figo belongs to the order Magnoliales, family Magnoliaceae.
Aristolochia belongs to the order Piperales and the family Aristolochiaceae. While this species is native to Central America, other species of Aristolochia can be found in the forests of southwest Virginia.
Asarum canadense is native to moist forests of Canada and the eastern US. It belongs to the family Aristolochaceae. It is not related to the plant used to produce ginger root for cooking (which is a member of the Zingiberaceae), but its roots are said to have a similar flavor. However, as a member of the Aristolochaceae, it contains the potentially toxic aristolochaic acid, so its culinary use is discouraged.
Asarum belongs to the order Piperales, family Aristolochiaceae. It is native to China and the flower has a scent similar to mushrooms.
Piper nigrum is a member of the order Piperales, family Piperaceae. Berries of this plant are the source of black pepper used in cooking.