Translated from the German Die Pflanzenwelt von West-Australien, südlich des Wendekreises, originally published in 1906.
Gives a short introduction to the vegetation of the whole Australian Continent, history and literature up to 1905, the geographic setting in Western Australia and a detailed overview and classification of the vegetation in the Southwest Province and the Eremaean Province. Diels' study is closed by the presentation of the flora of extra-tropical Western Australia and its classification.
To illustrate the vegetation changes since Diels' time, as many as possible of the original photographic sites that could be identified were revisited and new photographs were taken for this edition.