Delavayanae tree peony with the following characteristics: Very bright yellow flowers, with orange-red stamen and filaments. Very pleasant scent. Somewhat vigorous shrub, completely smooth. Medium-late flowering. Originally from Yunnan, it was discovered by abbot Delavay in 1883, in the conifer forest at an altitude between 3.000 and 5.000 metres.
The Chinese name of this species means “tree peony with large yellow flowers”. It differs from the P. delavayi species for its larger size, reaching over 3 m, with larger, pure yellow flowers, and few shoots.