Claim: Leiosporoceros dussii is the only species in the hornwort genus Leiosporoceros, class Leiosporocerotopsida, and under division Anthocerotophyta.
Evidence: Leiosporoceros dussii is the only species in the hornwort genus Leiosporoceros. Class: Leiosporocerotopsida
Stotler & Crand.-Stotl. emend Duff Division: Anthocerotophyta Genus: Leiosporoceros
Hässel