Fig. 2: Typical flower colors and types in Paeonia.
From: Germplasm resources and genetic breeding of Paeonia: a systematic review
1–3, single type; 4–18, semi-double type; 19–22, Japanese type; 23–26, bomb type; and 27–30, full double type. The taxonomy and name of cultivars (species) are shown in Supplementary Data 3
