Aristolochia macrophylla wani nau'in tsiro ne na fure wanda aka fi sani da bututun ɗan ƙasar Holland. Ita ce kurangar inabi mai tsiro wacce ta fito daga gabashin Amurka da Kanada. Tsiren yana da manyan ganyensa masu sifar zuciya da fitattun furanni masu siffar bututu. Furanni masu launin kore-rawaya ne kuma wasu nau'ikan kwari ne ke shafa su da kamshin da suke fitarwa. Ana shuka shukar a matsayin kayan ado kuma ana amfani da ita a maganin gargajiya don magance cututtuka iri-iri.