Peony is a common name used for a number of distinct species. Plants with the common name Peony P Paeonia brownii (Brown's Peony)Paeonia delavayi (Tree Peony)Paeonia lactiflora (Chinese Peony) P cont. Paeonia lutea (Tree Peony)Paeonia officinalis (Peony)Paeonia ostii (Tree Peony) P cont. Paeonia potaninii (Tree Peony)Paeonia szechuanica (Tree Peony) Hidden category: Common name