flower buds u2014 length about 8 mm diameter about 8 mm color 39d unopened flower buds are globose with six distinct lines of dehiscence where they split to reveal the flower sepals u2014 arrangement quantity single whorl of six fused sepals length about 9 mm width about 4 mm shape elliptical apex acute margin entire texture upper and lower surfaces smooth glabrous color when opening upper surface 37b when opening lower surface 144c fully opened upper surface 37b fully opened lower surface 144c pedicels u2014 about 7 mm in length 1 mm in diameter 178b in color and no pubescence calyx u2014 about 9 mm in length about 1 1 cm in diameter 36a in color on both surfaces and no pubescence arrangement appearance u2014 usually 6 or 7 per flower petal length u2014 about 1 9 cm petal width u2014 about 1 3 cm petal shape u2014 fan shaped petal apex u2014 ruffled rounded petal base u2014 sagittate petal margin u2014 undulate petal texture upper and lower surfaces u2014 glabrous petal color u2014 upper and lower surfaces are 155c quantity arrangement u2014 about 25 to 30 short stamens clustered in the center about 8 mm long filament color is 2c and anther color is 13a the short stamens are surrounded by 6 longer stamens about 1 2 cm long filament color is 63a and anther color is n199c the stamens are not pubescent pollen u2014 produced in moderate quantities and is 13b in color on the short stamens and 144c in color on the long stamens quantity u2014 one superior.