 Fieldwork in the Brisbane Ranges in 1994 showed that "I. ceratophyllus", which had been common in areas before dieback and had vanished along with other sensitive species, had yet to return after 30 years.This was despite other sensitive species, such as grasstree ("Xanthorrhoea australis"), smooth parrot-pea ("Dillwynia glaberrima"), erect guinea flower ("Hibbertia stricta") and prickly broom heath ("Monotoca scoparia"), eventually regenerating around 10 years post-infection.All Tasmanian populations are at risk of eradication by "P. cinnamomi".