Kalmar "Genus Monotropa" tana nufin wani nau'in tsire-tsire masu tsire-tsire waɗanda suke samuwa a cikin yankuna masu zafi na Arewacin Hemisphere. Sunan "Monotropa" ya fito ne daga kalmomin Helenanci "monos" (ma'ana "daya") da "tropos" (ma'anar "juya"), yana nufin cewa tsire-tsire suna samar da nau'i nau'i na furen kawai kuma suna juya zuwa ga haske. Wadannan tsire-tsire ba su da chlorophyll kuma suna samun sinadarai ta hanyar parasitizing mycorrhizal fungi da ke hade da tushen bishiyoyi.