Synonyms for Waratah (same or very similar meaning)
WordNet sense 1 (straggling shrub with narrow leaves and conspicuous red flowers in dense globular racemes):
Telopea speciosissimaWordNet sense 2 (tall shrub of eastern Australia having oblanceolate to obovate leaves and red flowers in compact racemes):
Telopea OreadesFrom the ODE community, based on WordNetadd/edit