It looks like leaves or sepals growing where the flowers should be. This might be characteristic of a 'homeotic' mutation where the cells that were supposed to give rise to flowers in that area instead, through a spontaneous mutation, progressing into a developmental program for leaves or sepals. This event would have happened quite early when the flower head was first being developed. Hard to say if it would be inherited, but likely not. Are there others in the bunch doing the same or similar thing?
We see a lot of this in white aster growing wild in our prairie. It seems to affect about 5-10% of the plants and I think that is fairly common for aster yellows breakouts, mostly documented in crop plants.
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