I have two plants of P. Lynleigh Koopowitz open at this time. Each plant was 2 flower spikes but each spike only has a single flower. I just noticed another one in bud in the green house. This will be a single spike and once again it looks like it will only be a single flower.
I don't know if the cross makes a difference, but the cross on this one is (delenatii " Pink Partridge" X malipoense " Jolly Green Giant " FCC/AOS ). Maybe thats why two buds.