STELLA BELLA at 2.5 inches. The bees you see in the photograph are tiny native bees at about 4mm. I think the blocked flower shape is off interest.
This cultivar is tissued cultured and sold commercially here. It multiplies quickly and blooms muchly and certainly doesn't act as a dormant in the subtropics.
I have a love hate relationship with minatures. I plant them as border plants but as my garden expands they become hidden centre plants that are hard to find.