The record derives from TICA
(data supplied on )
which reports it as a synonym (record
CB990A1B-C03E-4BFA-9CD9-71D465632872) with original publication details: "L. Reichenbach, Icon. Fl. Germ. Helv. 19. 1858-1859" .
This name record (from TICA) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Pterotheca aspera in version 1 of The Plant List.