Philosophia Botanica

Linnaeus issues Philosophia Botanica, his manual of botanical method

Linnaeus organised the book as 365 numbered principles — one for every day of the year — and a Stockholm newspaper reviewed it before the year on its title page had begun.

A textbook of method, in 365 aphorisms

Carl Linnaeus issued Philosophia Botanica through Gottfried Kiesewetter in Stockholm, with the imprint year 1751 on its title page. It expanded his earlier Fundamenta Botanica with commentary, definitions, terminology, rules for description and naming, and practical advice.

The Linnean Society describes it as the first textbook of descriptive systematic botany and botanical Latin. Its 362 pages carry 365 numbered principles and eleven plates turning leaf shapes and other plant structures into a shared descriptive vocabulary.

Its practical subjects went down to the level of how to build a herbarium, lay out a garden, and prepare for a botanical excursion.

Imprinted 1751, reviewed in 1750

The Biodiversity Heritage Library catalogue and the Linnean Society both give 1751, and neither establishes a day or month of publication.

The book was nevertheless reviewed by Stockholm's Lärda Tidningar in December 1750, which means it had been printed and was circulating before that year ended. At least one early copy was marked 1750.

Imprint year and first circulation are simply not the same thing here, and modern scholars differ over which to call the publication date.

Not where binomials begin

The entry's claim about "the first appearance of his binomial nomenclature" overstates the book. It discussed using one-word nomina trivialia alongside generic names, but did not apply a stable two-word name to every known plant.

Earlier Linnaean publications had already used binary labels: the Hunt Institute identifies Gemmae arborum and Pan Svecicus, both from 1749, as the first and second.

The consistent application of trivial names across Linnaeus's plant catalogue came with Species Plantarum in 1753.

Sources

Researched 23 Aug 2026 8 sources 2 audit passes Date disputed

How this was checked

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Date disputed. Sources disagree about when this happened.

What the sources leave uncertain

The title page and most catalogues date the book 1751, but it was reviewed in December 1750 and at least one early copy was marked 1750. Modern scholars therefore differ between the imprint year and the actual first-circulation date.
No exact day of first sale or distribution was found.