Hybrid lactiflora.  Rose-pink.  Very large, double bloom form.   Kelway (and Son) (1915).

2 favorite votes.  

Hybrid lactiflora.  Dark red.  Wine-red.  Very large, full bloom form.   William Henry Krekler (1977).

2 favorite votes.  

Hybrid lactiflora.  Deep pink, white edges, golden-yellow center.  Large, semi-double bloom form.  Midseason.  USDA zone 2a and warmer.  Height of 3' (90 cm).   William Henry Krekler (1959).

2 favorite votes.  

Hybrid lactiflora.  White.  Large, double bloom form.  Late.  USDA zone 2a and warmer.  Height of 40" (100 cm).   Eugene H. Lins (1940).

2 favorite votes.  

Hybrid lactiflora.   Snook (1931).

2 favorite votes.  

Hybrid lactiflora.  Pink, light yellow center.  Staminoids tipped soft pink.  Large, Japanese (anemone, imperial) bloom form.  Midseason.   William Henry Krekler (1958).

2 favorite votes.  

Hybrid Lutea, Tree peony.  Lilac.  Semi-double to double bloom form.   Elwyn Chow (2005).

2 favorite votes.  

Hybrid lactiflora.   Auguste Dessert (1913).

2 favorite votes.  

Hybrid suffruticosa, Tree peony.  Dark red, purple shading.  Large, double bloom form.  Early.  USDA zone 2a and warmer.   Adrien Sénéclauze (1886).

2 favorite votes.  

Hybrid Lutea, Tree peony.  Golden-yellow.  Large, single bloom form.  Late.  USDA zone 2a and warmer.  Height of up to 4' 11" (up to 150 cm).   Prof. Arthur Percy Saunders (1948).

2 favorite votes.  

Hybrid / Species crosses.  Red, tan center.  Height of up to 27" (up to 70 cm).   William Henry Krekler (1978).

2 favorite votes.  

Hybrid suffruticosa.  White, light pink highlights, red flares.  Very large, semi-double bloom form.  Mid.  Height of up to 5' (up to 150 cm).   Unknown Japanese Breeder(s) (1929).

2 favorite votes.  

Hybrid lactiflora.  Cream, red streaks.  Mild fragrance.  Semi-double to double, flat bloom form.  Midseason.  Height of up to 28" (up to 70 cm).   Roy G. Klehm (1990).

2 favorite votes.  

Hybrid lactiflora.   Kelway (and Son) (1912).

2 favorite votes.  

Chinese, Tree peony.  Purple.  Double bloom form.  USDA zone 2a and warmer.   Unknown Chinese Breeder(s).

2 favorite votes.  

Hybrid lactiflora.  Dark red, golden-yellow center.  Moderate fragrance.  Large, single bloom form.  Late.   Edward Auten, Jr. (1931).

2 favorite votes.  

Hybrid lactiflora.  Deep pink.  Large, double bloom form.  Late.  USDA zone 2a and warmer.   Walter Z. Mains (1956).

2 favorite votes.  

Hybrid lactiflora.  Pink.  Double, bomb bloom form.  Early.  USDA zone 2a and warmer.   William S. Bockstoce (1933).

2 favorite votes.  

Hybrid / Species crosses.  Lilac.  Medium, single, cupped bloom form.  Early-to-mid.  USDA zone 2a and warmer.  Height of up to 32" (up to 80 cm).   Prof. Arthur Percy Saunders (1950).

2 favorite votes.  

Hybrid suffruticosa, Tree peony.  Purple, dark purple flares.  Semi-double bloom form.   Elwyn Chow (2001).

2 favorite votes.  

Hybrid lactiflora.  Light pink, salmon-pink center, white edges.  Double bloom form.  USDA zone 2a and warmer.  Height of up to 32" (up to 80 cm).   Roy G. Klehm (2000).

2 favorite votes.  

Tree peony.  Purple - red, dark purple undertones.  Semi-double to double bloom form.  Midseason.  USDA zone 6b and warmer.  

2 favorite votes.  

Hybrid Lutea, Hybrid suffruticosa, Tree peony.  Yellow, pink shading.  Single to semi-double bloom form.   Elwyn Chow (2005).

2 favorite votes.  

Hybrid rockii, Tree peony.  Red, purple shading, dark purple flares.  Single bloom form.  USDA zone 2a and warmer.  
Height: up to 4'11" (up to 150cm).   Unknown Chinese Breeder(s).

2 favorite votes.