Ma'anar ƙamus na "tushen dutse" yana nufin tsire-tsire na shekara-shekara, wanda kuma aka sani da Collinsonia canadensis, wanda yake asalin gabashin Arewacin Amirka. Yana da kamshi mai kauri da kamshi kuma a al'adance ana amfani da saiwoyinsa wajen maganin cututtuka na yoyon fitsari, duwatsun koda, da sauran cututtuka. Ana kuma kiran shukar a wani lokaci "doki balm" ko "richweed."
