Dahlias: Unknown Dahlia #1, 1 by NoH2O

NoH2O wrote:
This dahlia was supposed to be 'Alfred Grille' but obviously is not. It looks very much like 'Park Princess' but is taller, about 3 ½'. The petals are a pure deep pink with no blue or yellow. The pink is deeper than the picture shows. The apparent yellow is not on the pink petal itself. Instead, at the base of each petal is a tiny, yellowish almost transparent petal/sepal thingie. (How do you like my official terminology?) The flowers looks like a cactus type. The petals are tubular/rolled with an opening at the very end. Does anybody have any idea what it might be?