There were 2 illustrations found for F. Boyen
Ctenium bahiense Longhi-WagnerKew Bull., vol. 60 : p. 125, fig. 1 (2005) [F. Boyen]
Ctenium cirrhosum (Nees) KunthKew Bull., vol. 60 : p. 126, fig. 2 (2005) [F. Boyen]
Ctenium bahiense Longhi-WagnerCtenium cirrhosum (Nees) Kunth