Scorzonera cana (Jacquin-Schwarzwurzel) IMG 7494.JPG
COI00041009 - Podospermum canum - Becker, Alexander K. - s.n..jpg
Portál informačního systému ochrany přírody
Herbarium of the University of Coimbra (COI)
Taxonomy database of the U.S. National Center for Biotechnology Information
Global Biodiversity Information Facility
Open Tree of Life reference taxonomy version 3.2