Hymenoxys grandiflora nau'in tsiro ne na dangin Asteraceae, ɗan asalin kudu maso yammacin Amurka da arewacin Mexico. Ana kuma san shi da sunan "Gidan gishiri na Oldman" ko "largeflower hymenoxys". Itacen yana samar da manyan furanni masu launin rawaya masu tsayi masu tsayi, sirara da fitaccen faifai na tsakiya, kuma yawanci yana girma a cikin ƙasa mai yashi ko ƙasa mai bushewa, buɗaɗɗen wuraren zama kamar wankin hamada da ciyayi.