Geographical variation in flower colour patterns within E. leptorrhizum (boxes), E. pauciflorum (circles), E. mikinorii (diamonds) and E. glandulosopilosum (triangle). The colour of the boxes, circles, diamonds and triangle represent flower colour. The population codes are shown in Table 1. The left area of the red dotted line is western China.

 
 
  Part of: Xu Y, Liu L, Liu S, He Y, Li R, Ge F (2019) The taxonomic relevance of flower colour for Epimedium (Berberidaceae), with morphological and nomenclatural notes for five species from China. PhytoKeys 118: 33-64. https://doi.org/10.3897/phytokeys.118.30268