Shown to the left is a view of the flower of P. coriacea from the bottom demonstrating method of measurement. Shown to the right is a flower stipe and pedicel of P. coriacea demonstrating method of measurement. a Width of hypanthium b Length of sepal c Width of sepal d Length of pedicel e Width of pedicel f Length of stipe g Width of stipe h Length of bract i Width of bract.