The flower colors of ‘Hesperus’ and ‘Renown’ are fairly similar.  ‘Renown’ has cream stigmas while those of ‘Hesperus’ are a darker pink. The sheath is also darker in ‘Hesperus’. If you don’t look at these features, you can easily confuse the two plants.

Cultivar: Renown
Year: 1949
Seedling No: not known
Group: Banquet
Flower: Color: “copper rose”  (Reath and Saunders), small dark flares
Form: single, 2-3 rows, 10-12 petals
Blooms: Week 6 (later than most lutea hybrids)
Carpels: 5, green
Stigmas: cream
Sheath: pink and yellow blend; “mauve-lilac” (Reath and Saunders)
Stamens: filaments red at base, shading to white
Plant: Habit: wide bush
Foliage color: medium green
Foliage form: slightly more narrow than typical
Height: 38″ on 8 year plant
Recommendation: Recommended
Availability: Few nurseries specializing in woody peonies