Hornwort shine "kowane daga cikin aji (Anthocerotopsida) na shuke-shuke bryophytic waɗanda suke kama da liverworts amma suna da capsules masu kama da ƙaho." Hornworts ƙanana ne, tsire-tsire marasa jijiyoyi waɗanda galibi ana samun su a cikin wuraren zama masu ɗanɗano, kamar wuraren dausayi, bogus, da koguna. Ana siffanta su da capsules na sporophyte mai siffar ƙaho, waɗanda ke da goyan bayan ciyawar da ke fitowa daga babban jikin shuka (thallus). Ana ɗaukar Hornworts a matsayin ɗaya daga cikin tsofaffin tsire-tsire na ƙasa, tare da burbushin halittu tun farkon lokacin Devonian, kusan shekaru miliyan 410 da suka gabata.