Kalmar "Pteridophyta" tana nufin rabon haraji ko phylum na shuke-shuke wanda ya haɗa da ferns, horsetails, da whisk ferns. Wadannan shuke-shuke suna halin da ciwon jijiyoyin bugun gini nama don gudanar da ruwa da kuma gina jiki, kazalika da reproducing via spores maimakon iri. Sunan "Pteridophyta" ya samo asali ne daga kalmomin Helenanci "pteris" ma'ana "fern" da "phyton" ma'ana "shuka."