Hybrid Lutea, Tree peony.  Light pink, ages to white .  Ruffled petals variably notched and crimped, giving a puffed effect like a cloud.  None / no fragrance.  Semi-double, ruffled bloom form.  Early-to-mid.  USDA zone 4b and warmer.  
Height: up to 32" (up to 80cm).  

Found Rose, Pernetiana.  Yellow.  Double (17-25 petals) bloom form.  

Hybrid Lutea, Tree peony.  Pink and coral-red.  Large, double bloom form.  
Height: up to 3' (up to 90cm).  

Hybrid Lutea, Tree peony.  Dark red, russet flares.  None to mild fragrance.  Medium to large, semi-double bloom form.  Early-to-mid.  
Height: up to 4' (up to 120cm).  

Hybrid Lutea, Tree peony.  Blush pink.  Medium to large, single, cupped, ruffled bloom form.  
Height: up to 4'7" (up to 140cm).  

Hybrid Lutea, Tree peony.  Light yellow, cream blending, light pink shading, russet flares.  Medium to large, single, ruffled bloom form.  
Height: up to 28" (up to 70cm).  

Hybrid Lutea, Tree peony.  Cream, rose-pink shading, coral-pink edges.  Semi-double bloom form.  
Height: up to 28" (up to 70cm).  Width: up to 3' (up to 90cm).

Hybrid Lutea, Species Cross, Tree peony.  Guava pink or lavender-pink.  Notched, crinkled petals.  Medium to large, single, ruffled bloom form.  
Height: up to 4'11" (up to 150cm).  

Hybrid Lutea, Tree peony.  Cream, red flares.  Waxy, heavy petals.  Large, semi-double to double bloom form.  
Height: up to 30" (up to 75cm).  

Hybrid Lutea, Tree peony.  Light yellow.  Medium, double, ruffled bloom form.  
Height: up to 5' (up to 150cm).  

Hybrid Lutea, Tree peony.  Lilac-pink and coral-pink, red flares, ages to light pink .  Prolific.  
Height: up to 30" (up to 75cm).  

Hybrid Lutea, Tree peony.  Cream, red flares.  
Height: up to 3' (up to 90cm).  Width: up to 5' (up to 150cm).

Found Rose, Shrub.  White, pink highlights.  Single (4-8 petals) bloom form.  Blooms in flushes throughout the season.  

Hybrid rockii, Hybrid suffruticosa, Tree peony.  

Hybrid Lutea, Tree peony.  Rose-pink or rose-red.  Semi-double, ruffled bloom form.  
Height: up to 4½' (up to 135cm).  

Hybrid Lutea, Tree peony.  Creamy yellow blushed pale pink.  Large, semi-double, ruffled bloom form.  USDA zone 4b and warmer.  
Height: up to 3' (up to 90cm).  

Hybrid Lutea, Tree peony.  Coral-red or salmon-pink.  Maroon flares.  Semi-double bloom form.  

Hybrid Lutea, Tree peony.  Orange-red and orange-pink, ages to lighter .  Ornamental foliage.  Medium, single, flat bloom form.  
Height: up to 42" (up to 105cm).  Width: up to 4' (up to 120cm).

Hybrid suffruticosa.  Deep pink, darker veining, black flares.  Large, semi-double, ruffled bloom form.  Early.  
Height: up to 5' (up to 150cm).  

Hybrid / Species crosses.  Light pink, lighter edges.  Single, cupped bloom form.  Early-to-mid.  
Height: up to 3' (up to 90cm).