National Botanic Garden of Wales, United Kingdom

Common name: rhosyn-y-mynydd, Delavay peony, tree peony

Family: Paeoniaceae (peony family)

Synonym: Paeonia forrestii, Paeonia franchetii, Paeonia handel-mazzettii, Paeonia lutea, Paeonia potaninii, Paeonia trollioides

Distribution: China to Tibet

Hardiness: (H6) Hardy-very cold winter. -20 to -15°C (USDA 6b/7a)

Life form: Deciduous shrub/sub-shrub • Llwyn collddail

Geirdarddiad / Etymology: Paeonia (pay-OHN-ee-uh): Named after Paeon, the physician to the gods who, in mythology, was changed into a flower by Pluto.

Geirdarddiad / Etymology: delavayi (del-uh-VAY-ee): For l’Abbé Jean Marie Delavay (1834–1895), French missionary and collector of plants in China.

Description: With large leaves divided into numerous lanceolate leaflets. Flowers to 10 centimetres in width, deep maroon with yellow stamens, with conspicuous leafy bracts.