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De Jussieu system

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An earlysystem of plant taxonomydeveloped byAntoine Laurent de Jussieu(1748 – 1836), thede Jussieu System'(1789), is of great importance as a starting point forbotanical nomenclatureat the rank offamily,together withMichel Adanson'sFamilles naturelles des plantes(1763). While Adanson introduced the concept of families, Jussieu arranged them hierarchically into Divisions, Classes and Orders (equivalent to families), in his seminalGenera plantarum.[1]

After the publication ofGenera plantarumJussieu published many memoirs further developing the description andcircumscriptionof families. His final sysyem was published posthumously in 1837, a year after his death.[2]

Organization[edit]

  • Index: Structured p. lxiii,[3]Alphabetical p. 454[4]
  • Overview: Page lxii - Classes and orders

The main groups recognized are:

Further subdivided by the position of the stamens and calyx in reference to theovary

    • Hypogyna ( “below ovary”; Ovary above attachment of floral parts)
    • Perigyna (Ovary surrounded by attachment of floral parts)
    • Epigyna ( “above ovary”; Ovary below attachment of floral parts)[5]

Acotyledones[edit]

  • I. Acotyledones(page 1)
    Classes: 1, with as families:Fungi,Algae,Hepaticae,Musci,Filices,Najades

Monocotyledones[edit]

  • II. Monocotyledones(page 21)
    Classes: 2-4
2: Staminahypogyna(page 23)
4 Orders
4. Ordo IAroideae(pages 23–25)

...

7. Ordo IVGramineae(pages 28–35)
3: Stamina perigyna (page 35)
8 Orders
11. Ordo IPalmae(page 37-40)
12. Ordo IIAsparagi(pages 40-43)
13. Ordo IIIJunci(pages 43 - 48)
14. Ordo IVLilia(pages 48-9)
15. Ordo VBromeliae(pages 49-51)
16. Ordo VIAsphodeli(pages 51-53)
17. Ordo VIINarcissi(pages 54-56)
18. Ordo VIIIIrides(pages 57-60)
4: Stamina epigyna (page 60)
3 Orders
19. Ordo IMusae(pages 61-62)
21. Ordo IIIHydrocharides(pages 67-69)

Dicotyledones[edit]

  • III. Dicotyledones(page 70)
    A. Monoclinae
    a) Apetalae(Absent petals)
    Classes: 5-7
5: Stamina epigyna (page 72)
6: Stamina perigyna (page 72)
7: Stamina hypogyna (page 86)
  • b) Monopetalae(Fused petals)
    Classes: 8-11
8: Corolla hypogyna (page 93) 15 orders
1.Lysimachiae
...
15.Sapotae
9: Corolla perigyna (page 153)
10: Corolla epigyna: antheris connatis (page 166)
11: Corolla epigyna: antheris distinctis (page 193)
  • c) Polypetalae(Free and separate petals)
    Classes: 12-14
12: Stamina epigyna (page 216)
13: Stamina hypogyna (page 228)
22 Orders
...
11. Ordo XXCisti(page 294)
...
14: Stamina perigyna (page 305) 13 orders
  • B. Diclinae(page 383)
    Classes: 15

References[edit]

  1. ^Jussieu 1789.
  2. ^Jussieu 1837.
  3. ^Jussieu 1789,p. lxiii.
  4. ^Jussieu 1789,p. 454.
  5. ^Stevens 1994,p. 54.

Bibliography[edit]

  • Jussieu, Antoine Laurent de(1789).Genera plantarum: secundum ordines naturales disposita, juxta methodum in Horto regio parisiensi exaratam, anno M.DCC.LXXIV(in Latin). Paris.OCLC5161409.(also available atGallica))
  • Jussieu, Antoine (1837)."Introductio in historiam plantarum".Annales des Sciences Naturelles(in Latin): 97–160, 193–239.
  • Stevens, Peter Francis (1994).The Development of Biological Systematics: Antoine-Laurent de Jussieu, Nature, and the Natural System.Columbia University Press.ISBN978-0231515085.
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