 Pl., is a survey of the vascular flora of Australia prepared by Government botanist for the state of Victoria Ferdinand von Mueller and published in 1882.Von Mueller describes the development of the census in the preface of the volume as an extension of the seven volumes of the "Flora Australiensis" written by George Bentham.A new flora was necessary since as more areas of Australia were explored and settled, the flora of the island-continent became better collected and described.