Fig. 4

Knautia macedonica expression model for internal and external florets. Color shade indicates level of expression with darker shades signifying higher expression relative to other petals in that flower. Significance shown in blue: circles (not significant) and blue asterisk (*p ≤ 0.05; **p ≤ 0.01; ***p ≤ 0.001). Blue circles or asterisks show dorsal to lateral (top), dorsal to ventral (middle), and lateral to ventral (bottom). Green arrows highlight petals with a significant change in expression between external and internal florets