Kalmar "Family Theaceae" tana nufin kalmar botanical da ke wakiltar dangin furanni. Yana da dangin taxonomic na angiosperms wanda ya hada da kusan nau'in bishiyoyi da shrubs 150, wanda aka fi sani da shayi ko dangin camellia. Tsire-tsire a cikin wannan iyali ana samun su ne a Asiya kuma sun haɗa da wasu nau'ikan mahimmancin tattalin arziki, irin su Camellia sinensis (tsarin shayi) da Camellia japonica ( camellia na Japan ), waɗanda ake nomawa sosai don furanni na ado da ganye. Ganyen wasu nau’o’in halittu a wannan iyali na dauke da sinadarin Caffeine da sauran alkaloids, wadanda suke da sinadarai masu kara kuzari kuma ana amfani da su wajen hada shayi da sauran abubuwan sha.