Phal petal notches

[Jennyfleur]

Hi everyone (third attempt - computer issues!)

Some of you may have seen some pictures of my unknown Phal 'Dot' lately. However, I noticed something the other day and wondered what you all thought - the flowers on one spike have notches on the top of the petals but the flowers on the other spike do not have these notches!

Since this is the first time this Phal has flowered for me (as it was a 'rescued-from-near-death' project), I don't have any previous flowers for comparison.

I've seen these marks on pictures of pure white Phals before, but I wondered if anyone had noticed flowers on the same plant but on two spikes behaving differently.

Hope that all makes sense (the first time I wrote all this out it was much better!) but, if not, here are a couple of pics for comparison.