Thorne system (1992)

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A modern system of plant taxonomy, the Thorne system (1992) of plant classification was drawn up by the botanist Robert F. Thorne (1920- ). He replaced it in 2000 with a new system.

The system is available online at two sites. Firstly, at the Center for the Study of Digital Libraries Texas A&M.[1] Secondly in the 1999 lecture notes by J.L. Reveal, at that time a professor at the Norton Brown Herbarium, University of Maryland [2][3][4] with an extensive listing of synonyms, both nomenclatural and taxonomic, for each name in the system). The Thorne system (1992) counts 440 families and 69 orders.

Earlier versions used the -florae suffix for superorder.[5]