I'm interested to know where your lovely pic of Calandrinia balonensis was taken. I grow seedlings of this (originally from the Bourke area, NW NSW). The petals of my plants are purple to the base of the petal, while those in your photo are a similar colour at the tip, white at the base. I would like to find seed of your bicolour variety - but then, the sp has a huge distribution across the inland. I have put a link to your photo in my recently started website shown below.