Newcomb, L. 1989 . Newcomb's Wildflower Guide: An Ingenious New Key System for Quick, Positive Field Identification of the Wildflowers, Flowering Shrubs and Vines of Northeastern and North-Central North America. Boston: Little, Brown and Co....
Tree peony (Paeonia suffruticosa Andrews.) is a perennial deciduous shrub belonging to the genus Paeonia [1]. It is one of the earliest known horticultural and medicinal plants in the world [2]. Tree peony is loved by most people in the world because of its dignified and elegant flowers [...