The Collaborative International Dictionary
Chenopodium Vulvaria
Notchweed \Notch"weed`\, n. (Bot.) A foul-smelling weed, the stinking goosefoot ( Chenopodium Vulvaria).
Wikipedia
Chenopodium vulvaria
Stinking goosefoot (Chenopodium vulvaria), or notchweed, is a foul-smelling plant or weed. The plant is a member of the genus Chenopodium, the goosefoots.