Aspects of this topic are discussed in the following places at Britannica.
...of compiling an unambiguous descriptive classification of all seed plants. Collaborating with Hooker’s son Sir Joseph, Bentham spent 27 years in research and examination of specimens for the work Genera Plantarum (3 vol., 1862–83). It was published in Latin and covered 200 “orders” (analogous to what are now known as families) of 7,569 genera, which included more than...
...applicability of the evolutionary theory to botany in general and to plant geography in particular. The capstone to Hooker’s career came in 1883 with the publication of the final volume of the Genera Plantarum, written in conjunction with George Bentham. This world flora, describing 7,569 genera and approximately 97,000 species of seed-bearing plants, was based on a personal...
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