Kalmar “fure mai ban sha’awa” tana nufin nau’in furen da ba shi da furanni. Maimakon samun furanni masu ban sha'awa waɗanda ke jan hankalin masu yin pollinators, furanni masu ban sha'awa suna dogara da wasu sifofi irin su sepals, stamens, ko bracts don jawo hankalin masu pollinators. Wasu misalan furannin furanni sun haɗa da furannin itacen oak, willows, da ciyawa. Kalmar "apetalous" ta samo asali ne daga kalmomin Helenanci "a-" ma'ana "ba tare da" da "petalon" ma'ana "leaf ko petal."