Erysimum asperum wani nau'in tsiro ne a cikin dangin Brassicaceae, wanda aka fi sani da "roket prairie" ko "farin bangon yamma." Tsire-tsire ne na shekara-shekara wanda asalinsa ne a yammacin Arewacin Amurka. Kalmar "asperum" tana nufin "m" ko "mai tsanani" a cikin harshen Latin, wanda zai iya nufin nau'i mai laushi na ganye ko mai tushe.
