Kalmar "cestrum" kalma ce ta ilimin halitta wacce ke nufin jinsin tsire-tsire na furanni a cikin dangin dare (Solanaceae). Halin halittar Cestrum ya ƙunshi kusan nau'ikan 150 na ciyayi masu tsiro da ƙananan bishiyoyi, waɗanda galibinsu 'yan asali ne zuwa yankuna masu zafi da wurare masu zafi na Amurka. An san tsire-tsire da furanni masu kamshi kuma ana shuka su azaman kayan ado a cikin lambuna da shimfidar wurare. Kalmar "cestrum" ta samo asali ne daga kalmar Helenanci "kestron," wanda ke nufin "spindle," dangane da siffar 'ya'yan itacen.