Kalmar “genus” tana nufin rarrabuwar haraji da ke haɗa nau’o’in jinsin da ke da alaƙa da juna.Eustoma shine jinsin tsire-tsire na furanni a cikin dangin Gentianaceae, wanda aka fi sani da lisianthus ko Texas bluebells. Waɗannan tsire-tsire na asali ne daga Arewacin Amirka da Kudancin Amirka kuma suna da kyan gani, furanni masu kama da ƙaho waɗanda suka zo da launuka iri-iri, ciki har da fari, ruwan hoda, purple, da shuɗi. Sunan "Eustoma" ya samo asali ne daga kalmomin Helenanci "eu" (ma'anar "mai kyau" ko "rijiya") da "stoma" (ma'anar "baki"), yana nufin furanni masu kyau na shuka.