Tallest one was 27 cm. Similar to AussieGall's sighting https://southern-highlands.naturemapr.org/sightings/4609671. I think these may be T pauciflora as I found at least one plant that had a normal flower and mutated flower on the same stem and growing within a colony of mutated plants (see sighting: https://canberra.naturemapr.org/sightings/4628832)