Intersectional Hybrid / Itoh.  Lavender, mauve flares.  Semi-double bloom form.  Midseason.   Irene Tolomeo (2001).

6 favorite votes.  

Hybrid lactiflora.  Dark red.  Staminoids edged yellow.  Japanese (anemone, imperial) bloom form.  Midseason.  USDA zone 2a and warmer.   R.H. Jones (1957).

6 favorite votes.  

Hybrid / Species crosses.  Dark red.  Large, single bloom form.  Very early.  USDA zone 2a and warmer.   Edward Auten, Jr. (1937).

6 favorite votes.  

Hybrid lactiflora.   Joseph Bernstein.

6 favorite votes.  

Intersectional Hybrid / Itoh.  Yellow, lighter edges, red flares.  Medium, single to semi-double bloom form.  Midseason.  USDA zone 2a and warmer.  Height of 18" to 2' (45 to 60 cm).   Don Hollingsworth (1974).

6 favorite votes.  

Hybrid lactiflora.  Red.  Japanese (anemone, imperial) bloom form.   Robert William Tischler (1976).

6 favorite votes.  

Hybrid lactiflora.  White, cream center.  Moderate fragrance.  Very large, Japanese (anemone, imperial) bloom form.  Mid.  USDA zone 2a and warmer.  Height of 30" to 3' (75 to 90 cm).   Myron D. Bigger (1937).

6 favorite votes.  

Hybrid lactiflora.  Silvery pink outer petals, cream and crimson petals mingled in center.  Strong fragrance.  Medium, full, crown bloom form.  Mid-to-late.  USDA zone 2a and warmer.  Height of up to 26" (up to 65 cm).   BRAND (1913).

6 favorite votes.  

Hybrid Lutea, Tree peony.  Crimson, dark red flares.  Large, single to semi-double bloom form.  Mid.  USDA zone 2a and warmer.  Height of up to 3' (up to 90 cm).   Prof. Arthur Percy Saunders (1942).

6 favorite votes.  

Hybrid lactiflora.  Rose-pink, cream center, buff center, rose-pink center.  Mild fragrance.  Medium, double bloom form.  Midseason.  Height of up to 39" (up to 100 cm).   Unknown Chinese Breeder(s).

6 favorite votes.  

Hybrid lactiflora.  Seashell-pink, lighter center, salmon-pink shading, ages to lighter .  Small bonnet.  Rose, sweet fragrance.  Large, full, rose bloom form.  Early-to-mid.  USDA zone 2a and warmer.   Unknown Dutch Breeder (1905).

6 favorite votes.  

Hybrid rockii, Tree peony.  Light pink, dark red flares, ages to white .  Moderate fragrance.  Large, semi-double bloom form.  Midseason.   Chen Dezhong (2002).

6 favorite votes.  

Hybrid lactiflora.   Julian L. Janus.

6 favorite votes.  

Hybrid lactiflora.  Pink, purple shading, yellow center.  Moderate fragrance.  Single bloom form.  Early.  USDA zone 2a and warmer.  Height of up to 39" (up to 100 cm).   Max Josef Goos (1912), August Koenemann (1912).

6 favorite votes.  

Hybrid lactiflora.  White, lemon-yellow center.  Light pink bonnet (15-30 petals).  Strong fragrance.  Medium, double, bomb bloom form.  Early-to-early mid.  USDA zone 2a and warmer.  Height of 30" to 35" (75 to 90 cm).   Carl G. Klehm (1970).

6 favorite votes.  

Hybrid rockii, Tree peony.  White, dark purple flares.  Moderate fragrance.  Double, Japanese (anemone, imperial) bloom form.  Early-to-mid.   Chen Dezhong (1985).

6 favorite votes.  

Hybrid lactiflora.  Red, yellow center.  Semi-double to double bloom form.  Midseason.   Krasnova / Краснова (1960).

6 favorite votes.  

Hybrid lactiflora.  Deep pink and light pink.  Various colours on same plant, also white..  Moderate fragrance.  Large, double, bomb bloom form.  Late.  USDA zone 2a and warmer.  Height of up to 28" (up to 70 cm).   Carl G. Klehm (1960).

6 favorite votes.  

Species, Tree peony.  Color varies from purple-crimson to peach; yellow and white forms are classed separately.  Medium, single bloom form.  USDA zone 6b through 9b (default).  
Height: 5½' to 6' (165 to 185cm).   Père Jean Marie Delavay (1884).

6 favorite votes.  

Herbaceous species, Species.  Red.  Single bloom form.  USDA zone 2a and warmer.  

6 favorite votes.  

Hybrid Lutea, Tree peony.  Mauve, yellow undertones, darker flares.  Single to semi-double bloom form.  Late midseason.  USDA zone 2a and warmer.   Prof. Arthur Percy Saunders (1941).

6 favorite votes.  

Hybrid lactiflora.  Light pink, yellow center.  Japanese (anemone, imperial) bloom form.  USDA zone 2a and warmer.   Unknown Japanese Breeder(s) (1909).

6 favorite votes.  

Hybrid lactiflora.  Light pink, cherry-red stripes.  Double bloom form.  Mid.  USDA zone 2a and warmer.  Height of 32" to 34" (80 to 85 cm).   Roy G. Klehm (1969).

6 favorite votes.  

Hybrid lactiflora.  Crimson, purple shading.  Japanese (anemone, imperial) bloom form.   Edouard Doriat (1930).

6 favorite votes.