- Whetstone River (Wikipedia)
The Whetstone River is a 12.7-mile-long (20.4 km) tributary of the Minnesota River, in northeastern South Dakota and a very small portion of western Minnesota in the United States. Via the Minnesota River, it is part of the watershed of the Mississippi River.
- Calystegia silvatica (Wikipedia)
The morning glory Calystegia silvatica (syn. Calystegia sepium silvatica, C. inflata, and C. sylvestris) is known by the common name giant bindweed or large bindweed. It is the largest species of bindweed and is a strong rampant climber.