"FILICOPSIDA" ba sanannen kalmar Turanci ba ce. Duk da haka, "Filicopsida" sanannen nau'in nau'in shuke-shuken haraji ne, wanda aka fi sani da ferns. Ferns rukuni ne na tsire-tsire na jijiyoyin jini waɗanda ke haifuwa ta hanyar spores kuma ba sa fitar da furanni ko iri. Ana siffanta su da manyan ganyaye masu rarrabu da ake kira fronds. Ajin Filicopsida ya ƙunshi kusan 10,560 sanannun nau'in ferns, waɗanda aka rarraba a ko'ina cikin duniya a wurare daban-daban.