Kalmar "Genus" tana nufin matsayi na harajin da aka yi amfani da shi a cikin rabe-raben halittu masu rai da burbushin halittu. Kashi ne da ya ƙunshi nau'in nau'i ɗaya ko fiye waɗanda ke da wasu halaye da halaye. Waɗannan tsire-tsire suna da kamanni na musamman, tare da manyan ganye masu kauri masu kama da fronds fern da kauri, itace mai kauri. halaye na kwayoyin halitta kuma an rarraba su tare a cikin matsayi ɗaya na haraji.