Kalmar "Genus Tectona" tana nufin rukuni na nau'in shuka a cikin dangin Lamiaceae. Mafi sanannun jinsuna a cikin wannan nau'in shine Tectona grandis, wanda aka fi sani da teak, wanda shine babban bishiyar bishiyar da ta fito daga kudu da kudu maso gabashin Asiya. Itacen Teak yana da daraja sosai saboda tsayin daka, ƙarfinsa, da juriya na dabi'a ga kwari da lalata, kuma ana amfani da ita sosai don kayan ɗaki, bene, da ginin jirgin ruwa.