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Philosophia Botanica

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Title: Philosophia Botanica  
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Subject: Critica Botanica, 1751 in science, List of systems of plant taxonomy, Classes Plantarum, Linnaean taxonomy
Collection: 1751 Books, 1751 in Science, Botanical Nomenclature, Botany Books, Carl Linnaeus
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Philosophia Botanica

Title page to a 1783 edition of Linnaeus's Philosophia Botanica, first published in 1751.

Philosophia Botanica ("Botanical Philosophy", ed. 1, Stockholm & Amsterdam, 1751.) was published by the Swedish naturalist and physician Carolus Linnaeus (1707–1778) who greatly influenced the development of botanical taxonomy and systematics in the 18th and 19th centuries. It is "the first textbook of descriptive systematic botany and botanical Latin".[1] It also contains Linnaeus's first published description of his binomial nomenclature.

Philosophia Botanica represents a maturing of Linnaeus's thinking on botany and its theoretical foundations, being an elaboration of ideas first published in his Fundamenta Botanica (1736) and Critica Botanica (1737), and set out in a similar way as a series of stark and uncompromising principles (aphorismen). The book also establishes a basic botanical terminology.

The following principle §79 demonstrates the style of presentation and Linnaeus's method of introducing his ideas.

A detailed analysis of the work is given in Frans Stafleu's Linnaeus and the Linnaeans, pp. 25–78.


  • Binomial nomenclature 1
  • Historical context of Linnaean publications 2
    • The Dutch period 2.1
    • Species plantarum 2.2
    • Fundamenta, Critica and Philosophia 2.3
  • Historical assessment 3
  • Bibliographic details 4
  • See also 5
  • Footnote 6
  • References 7
  • Bibliography 8

Binomial nomenclature

To understand the objectives of the Philosophia Botanica it is first necessary to appreciate the state of botanical nomenclature at the time of Linnaeus. In accordance with the provisions of the present-day International Code of Nomenclature for algae, fungi and plants the starting point for the scientific names of plants effectively dates back to the list of species enumerated in Linnaeus’s Species Plantarum, ed. 1, published 1 May 1753.[2] The Species Plantarum was, for European scientists, a comprehensive global Flora for its day. Linnaeus had learned plant names as short descriptive phrases (polynomials) known as nomina specifica. Each time a new species was described the diagnostic phrase-names had to be adjusted, and lists of names, especially those including synonyms (alternative names for the same plant) became extremely unwieldy. Linnaeus’s solution was to associate with the generic name an additional single word, what he termed the nomen triviale (which he first introduced in the Philosophia Botanica), to designate a species. Linnaeus emphasized that this was simply a matter of convenience, it was not to replace the diagnostic nomen specificum. But over time the nomen triviale became the “real” name and the nomen specificum became the Latin “diagnosis” that must, according to the rules of the International Code of Nomenclature, accompany the description of all new plant species: it was that part of the plant description distinguishing that particular species from all others.[2] Linnaeus did not invent the binomial system but he was the person who provided the theoretical framework that lead to its universal acceptance.[3] The second word of the binomial, the nomen triviale as Linnaeus called it, is now known as the specific epithet and the two words, the generic name and specific epithet together make up the species name.[4] The binomial expresses both resemblance and difference at the same time — resemblance and relationship through the generic name: difference and distinctness through the specific epithet.[5]

Until 1753 polynomials served two functions, to provide: a) a simple designation (label) b) a means of distinguishing that entity from others (diagnosis). Linnaeus's major achievement was not binomial nomenclature itself, but the separation of the designatory and diagnostic functions of names, the advantage of this being noted in Philosophia Botanica principle §257. He did this by linking species names to descriptions and the concepts of other botanists as expressed in their literature — all set within a structural framework of carefully drafted rules. In this he was an exemplary proponent of the general encyclopaedic and systematizing effort of the 18th century.[6]

Historical context of Linnaean publications

Carl Linnaeus (1707–1778) who established the binomial system of plant nomenclature.

generally taught in secondary schools all over EuropeThomistic logic and Aristotelian Linnaean historian, chronicler, and analyst

Botanical historian Alan Morton, though praising Linnaeus’s contribution to classification and nomenclature, is less complimentary about the theoretical ideas expressed in the publications discussed above:

Linnaeus's system of classification follows the principles of Aristotelian logic by which arranging subjects into classes is classification; distinguishing divisions of classes is logical division. The group to be divided is the genus; the parts into which it is divided are the species. The terms genus and species acquired their specialized biological usage from Linnaeus's predecessors, in particular Ray and Tournefort.[28] There was also the question of whether plants should a) be put together or separated because they conform to a definition (essentialism) or b) put together with plants having similar characteristics generally, regardless of the definition (empiricism). Linnaeus was inclined to take the first approach using the Method of Logical Division[nb 1] based on definition, what he called in Philosophia Botanica §152 the dispositio theoretica — but in practice he employed both methods.[29]

Historical assessment

These works established ground rules in a field which, at this time, had only “gentlemen's agreements”. Conventions such as: no two genera should have the same name; no universally agreed mechanisms. Genera Plantarum ran to five editions, the first in 1737 containing short descriptions of the 935 plant genera known at that time. Observing his own principle to keep generic names as short, euphonious, distinctive and memorable as possible he rejected many names that had gone before, including those of his fellow botanists which was not popular. In their place he used names that commemorated patrons, friends and fellow botanists as well as many names taken from Greek and Roman mythology.[27]

The Fundamenta Botanica (“The Foundations of Botany”) of 1736 consisted of 365 aphorisms (principles) with principles 210–324 devoted to nomenclature. He followed this form of presentation in his other work on nomenclature. Linnaeus apparently regarded these as a “grammar and a syntax” for the study of botany.[23] Chapters VII to X comprised principles 210 to 324 to do with the nomenclature of genera, species and varieties and how to treat synonyms. The Critica Botanica was an extension of these nomenclatural chapters of the Fundamenta. Critica Botanica which was published a year later in July 1737, the principles of the Fundamenta are repeated essentially unchanged but with extensive additions in smaller print.[24] It was this work, with its dogmatic, often amusing and provocative statements, that was to spread his ideas and enthrall intellects of the stature of Goethe.[25] He was, however, dismissive of botanical work other than taxonomy and presented his principles as dogma rather than reasoned argument.[26]

Fundamenta, Critica and Philosophia

With the foundations of plant nomenclature and classification now in place Linnaeus then set about the monumental task of describing all the plants known in his day (about 5,900 species) and, with the publication of Species Plantarum[19] in 1753, his ambitions of the 1730s were finally accomplished. Species Plantarum was his most acclaimed work and a summary of all his botanical knowledge. Here was a global Flora that codified the usage of morphological terminology, presented a bibliography of all the pre-Linnaean botanical literature of scientific importance, and first applied binomials to the plant kingdom as a whole. It presented his new 'sexual system' of plant classification and became the starting point for scientific botanical nomenclature for 6000 of the 10,000 species he estimated made up the world’s flora.[20] Here too, for the first time, the species, rather than the genus, becomes the fundamental taxonomic unit. Linnaeus defined species as " ... all structures in nature that do not owe their shape to the conditions of the growth place and other occasional features.” There was also the innovation of the now familiar nomen triviale (pl. nomina trivialia) of the binary name although Linnaeus still regarded the real names as the differentiae specificae or “phrase names” which were linked with the nomen triviale and embodied the diagnosis for the species — although be was eventually to regard the trivial name (specific epithet) as one of his great inventions.[21] Sketches of the book are known from 1733 and the final effort resulted in his temporary collapse.[22]

Species plantarum

From 1735 to 1738 Linnaeus worked in the Netherlands where he was personal physician to Dutch East India Company who had an impressive garden containing four large glasshouses that were filled with tropical and sub-tropical plants collected overseas. Linnaeus was enthralled by these collections and prepared a detailed systematic catalogue of the plants in the garden, which he published in 1738 as Hortus Cliffortianus ("in honour of Clifford's garden". It was during this exceptionally productive period of his life that he published the works that were to lay the foundations for biological nomenclature. These were Fundamenta Botanica ("Foundations of botany", 1736),[13] Bibliotheca Botanica ("Botanical bibliography", 1736), and Critica Botanica ("Critique of botany", 1737)[14] He soon put his theoretical ideas into practice in his Genera Plantarum ("Genera of plants", 1737),[15] Flora Lapponica ("Flora of Lapland", 1737), Classes Plantarum ("Plant classes", 1738),[16] and Hortus Cliffortianus (1738). The ideas he explored in these works were revised until, in 1751, his developed thinking was finally published as Philosophia Botanica [17] ("Science of botany"), released simultaneously in Stockholm and Amsterdam.[18]

The Dutch period

Before this could be achieved he needed to establish the principles of classification and nomenclature on which these works were to be based. [11][10]In the early eighteenth century colonial expansion and exploration created a demand for the description of thousands of new organisms. This highlighted difficulties in communication about plants, the replication of descriptions, and the importance of an agreed way of presenting, publishing and applying plant names. From about 1730 when Linnaeus was in his early twenties and still in Uppsala, Sweden, he planned a listing all the genera and species of plants known to western science in his day.

[9] The first edition of 1735 was just eleven pages long, but this expanded with further editions until the final thirteenth edition of 1767 had reached over 3000 pages.[8].zoological nomenclature) each of which he further divided into classes, orders, genera and species, with [generic] characters, [specific] differences, synonyms, and places of occurrence. The tenth edition of this book in 1758 has been adopted as the starting point for Regnum lapideum" (mineral kingdom) and the "Regnum vegetabile (plant kingdom), the Regnum animale (animal kingdom The first edition was published in 1735 and in it he outlines his ideas for the hierarchical classification of the natural world (the “system of nature”) by dividing it into the [7]".:[31]

Linnaeus's philosophical approach to classification is also noted by botanist David Frodin who observed that applying the methodus naturalis to books and people as well as plants, animals and minerals, was a mark of Linnaeus's ‘scholastic’ view of the world:

Finally, Linnaean scholar William T. Stearn has summarised Linnaeus's contribution to biology as follows:

Bibliographic details

Full bibliographic details for Philosophia Botanica including exact dates of publication, pagination, editions, facsimiles, brief outline of contents, location of copies, secondary sources, translations, reprints, manuscripts, travelogues, and commentaries are given in Stafleu and Cowan's Taxonomic Literature.[35]

See also

Retrieved 2010-08-02.Philosophia BotanicaFull downloadable scan of


  1. ^ Another example of Aristotelian logic is the Law of Excluded Middle (everything is either A or not A) used as the basis for dichotomous keys used in plant identification.


  1. ^ Stearn 1992, p. 35.
  2. ^ a b Sprague, p. 41
  3. ^ Svenson, Henry K. 1953. Linnaeus and the Species Problem. Taxon 2(3): 55–58.
  4. ^ Lawrence, George H.M. 1951. Taxonomy of Vascular Plants. New York: Macmillan. p. 194.
  5. ^ Stearn 1959, p. 6.
  6. ^ Stearn 1959, pp. 7,8, 13.
  7. ^ Linnaeus, Carl. 1735. Systema naturae. Leiden: Theodor Haak.
  8. ^
  9. ^ Linnaeus, Carl. 1758. Systema naturae. Ed. 10. 2 vols. Stockholm: L. Salvius.
  10. ^ Jonsell, p. 17.
  11. ^ Uggla, Arvid H. 1953. The Preparation of the Species Plantarum. Taxon 2(3): 60-62. p.60.
  12. ^ Hort, p. xxiii. (Preface)
  13. ^ Linnaeus, Carl. 1736. Fundamenta botanica. Amsterdam: Solomon Schouten.
  14. ^ Linnaeus, Carl. 1737. Critica botanica. Leiden: Conrad Wishoff.
  15. ^ Linnaeus, Carl. 1737. Genera plantarum. Leiden: Conrad Wishoff.
  16. ^ Linnaeus, Carl. 1738. Classes plantarum. Leiden: Conrad Wishoff.
  17. ^ Linnaeus, Carl. 1751. Philosophia botanica. Stockholm: R. Kiesewetter; Amsterdam: Z. Chatelain.
  18. ^ Morton, p.260.
  19. ^ Linnaeus, Carl. 1753. Species plantarum. 2 vols. Stockholm: L. Salvius.
  20. ^ Stearn 1959, p. 8.
  21. ^ Jonsell, p. 14.
  22. ^ Jørgensen, pp. 81–89.
  23. ^ Ekedahl, p. 49.
  24. ^ Morton p. 262.
  25. ^ Morton, p. 282.
  26. ^ Morton, p. 262.
  27. ^ Stearn 1971, p. 246.
  28. ^ Stearn 1959, p. 16.
  29. ^ Stearn 1959, p. 19
  30. ^ Morton, p. 276.
  31. ^ Stafleu. p. 25.
  32. ^ Stafleu, p. 337.
  33. ^ Frodin, p. 27.
  34. ^ Stearn 1959, p.10.
  35. ^ Stafleu & Cowan, pp. 90–91.


  • Frodin, David 2002. Guide to Standard Floras of the World, 2nd ed. Cambridge University Press: Cambridge.
  • Hort, Arthur 1938. The “Critica Botanica” of Linnaeus. London (English translation): Ray Society.
  • Stafleu, Frans A. 1971. Linnaeus and the Linnaeans: the Spreading of their Ideas in Systematic Botany, 1735–1789. Utrecht: International Association for Plant Taxonomy. ISBN 90-6046-064-2.
  • Stafleu, Frans A. and Cowan, Richard S. 1981. "Taxonomic Literature. A Selective Guide to Botanical Publications with dates, Commentaries and Types. Vol III: Lh–O." Regnum Vegetabile 105.
  • Stearn, William T.1959. "The Background of Linnaeus's Contributions to the Nomenclature and Methods of Systematic Biology". Systematic Zoology 8: 4–22.
  • Stearn, William T. 1960. “Notes on Linnaeus’s ‘Genera Plantarum’”. In Carl Linnaeus, Genera plantarum fifth edition 1754. Facsimile reprint Weinheim. Historiae Naturalis Classica 3.
  • Stearn, William T. 1971. In Blunt, William. The Compleat Naturalist: a Life of Linnaeus. New York: Frances Lincoln. ISBN 0-7112-1841-2.
  • Stearn, William T. 1983. Botanical Latin. London: David & Charles. ISBN 0-7153-8548-8.
  • Stearn, William T. 1986. Linnaeus and his students. In "The Oxford Companion to Gardens". Jellicoe, Geoffrey et al. (eds). Oxford: Oxford University Press. ISBN 0-19-866123-1.
  • Van Den Broek, Gerard J. 1986. "Baleful Weeds and Precious -Juiced Flowers, a Semiotic Approach to Botanical Practice". Leiden.
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