Hattorioceros is a genus of hornworts belonging to the family Anthocerotaceae.[1]
Only one species is known, Hattorioceros striatisporus (J Haseg.) J.Haseg.
The genus name of Hattorioceros is in honour of Sinsuke (or Sinske and Shinsuke) Hattori (1915-1992), who was a Japanese botanist (Bryology) and Professor of Botany at the University of Tokyo.[2]
The genus was circumscribed by Jiro Hasegawa in J. Hattori Bot. Lab. vol.76 on page 32 in 1994.