The Systematic census of Australian plants, with chronologic, literary and geographic annotations, more commonly known as the Systematic Census of Australian Plants, also known by its standard botanic abbreviation Syst.
Pl.,[1] 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 noted that by 1882 it had become difficult to distinguish some introduced species from native ones: The lines of demarkation between truly indigenous and more recently immigrated plants can no longer in all cases be drawn with precision; but whereas Alchemilla vulgaris and Veronica serpyllifolia were found along with several European Carices in untrodden parts of the Australian Alps during the author's earliest explorations, Alchemilla arvensis and Veronica peregrina were at first only noticed near settlements.
The occurrence of Arabis glabra, Geum urbanum, Agiimonia eupatoria, Eupatorium cannabinum, Cavpesium cernuum and some others may therefore readily be disputed as indigenous, and some questions concerning the nativity of various of our plants will probably remain for ever involved in doubts.
[2] Von Mueller dedicated both works to Joseph Dalton Hooker and Augustin Pyramus de Candolle.