Kalmar "genus" tana nufin matsayi na haraji da aka yi amfani da shi a cikin rarrabuwar halittu wanda ƙungiyoyin jinsuna masu alaƙa tare. "Beaumontia" wani nau'in tsire-tsire ne na furanni a cikin dangin Apocynaceae, 'yan asali zuwa yankuna masu zafi da wurare masu zafi na Asiya. Tsire-tsire a cikin wannan nau'in yawanci itacen inabi ne ko masu hawan dutse, kuma suna samar da manyan furanni masu ban sha'awa waɗanda galibi suna da ƙamshi. Wasu nau'ikan ana noma su azaman tsire-tsire na ado don kyawawan ganye da furanni.