Myrtillocactus geometrizans wani nau'in tsiron cactus ne wanda ya fito daga Mexico da Amurka ta tsakiya. Yana cikin dangin Cactaceae kuma yana da sifar sa ta columnar da shuɗi-kore, ribbed kara. Tushen zai iya girma har zuwa mita 10 a cikin daji amma yawanci ya kai tsayin mita 1-3 a cikin noma. Itacen yana samar da ƙananan furanni masu launin rawaya-kore a lokacin rani, sannan kuma berries masu launin shuɗi masu kama da blueberries a siffar da dandano. Sunan "Myrtillocactus" ya fito daga kalmar Latin "myrtillus," wanda ke nufin "blueberry," da "geometrizans" yana nufin tushe mai siffar geometrically.