De Jussieuův systém je prvním rozsáhlým taxonomickým systémem rostlin. Systém publikoval v roce 1789 Antoine Laurent de Jussieu v knize Genera Plantarum, secundum ordines naturales disposita juxta methodum in Horto Regio Parisiensi exaratam (někdy se název díla zkracuje na "Genera Plantarum").
Systém je v současnosti sice už dávno překonán, ale mnohé důležité základy tohoto systému se používají i v moderních systémech. V 18. století ještě nebyl vytvořen Mezinárodní kód botanické nomenklatury, proto tento starý systém má některá pravidla, na která dnes už nejsme zvyklí. Například termín "ordo" znamená ve skutečnosti čeleď, nikoliv řád v dnešním smyslu. Mnohé čeledi uveřejněné v tomto díle se používají dodnes, pouze se upravilo jméno čeledi podle pozdějších pravidel nomenklatury. Např. Cyperoidae bylo upraveno na Cyperaceae Juss. a bylo v této podobě konzervováno. Podobně u dalších čeledí.
De Jussieu řadí rostliny systematicky podle mnoha znaků. Rozděluje je na bezděložné, kam řadí houby, řasy, játrovky, mechy, kapradiny, cykasy, dále rozlišuje jednoděložné a dvouděložné. Dvouděložné dále dělí podle toho, zda mají či nemají korunu a pokud mají, tak zda mají korunní lístky volné a srostlé, také klade důraz na znak, zda má rostlina květy oboupohlavné nebo jednopohlavné. Zajímavostí je zařazení jehličnanů mezi dvouděložné rostliny.
Systém Acotyledones I. Acotyledones (bezlodyžné) Classe 1. Ordo 1. Fungi Genus: Mucor, Lycoperdon, Tuber, Clathrus, Phalus, Boletus, Helvella, Peziza, Cantharellus, Amanita, Suillus, Hydnum, Agaricus, Merulius, Auricularia, Hericius, Clavaria. Ordo 2. Algae Genus: Byssus, Conferva, Tremella, Ulva, Fucus, Cyathus, Hypoxylum, Sphaeria, Lichen. Ordo 3. HepaticaeGenus: Riccia, Blasia, Anthoceros, Targionia, Jungermannia, Marchantia. Ordo 4. MusciGenus: Splachnum, Polytrichum, Mnium, Hypnum, Fontinalis, Bryum, Phascum, Buxbaumia, Sphagnum, Porella, Lycopodium. Ordo 5. FilicesGenus: Ophioglossum, Onoclea, Osmunda, Acrostichum, Polypodium, Asplenium, Hemionitis, Elechnum, Lonchitis, Pteris, Myriotheca, Adiantum, Darea, Trichomanes, Zamia, Cycas, Pilularia, Lemma, Salvinia, Oetes, Quisetum. Ordo 6. NaiadesGenus: Hippuris, Chara, Ceratophyllum, Myriophyllum, Naias, Saururus, Aponogeton, Potamogeton, Ruppia, Zanichellia, Callitriche, Lenticula.
Monocotyledones II. Monocotyledones (jednoděložné) Classe 2. Ordo 7. AroideaeGenus: Ambrosinia, Zostera, Arum, Calla, Dracontium, Pothos, Houttuynia, Orontium, Acorus. Ordo 8. TyphaeGenus: Typha, Sparganium. Ordo 9. CyperoideaeGenus: Carex, Fuirena, Schaenus, Gahnia, Eriophorum, Scirpus, Thryocephalum, Killingia, Mapania, Chrysitrix. Ordo 10. GramineaeGenus: Cinna, Anthoxanthum, Bobartia, Aristida, Alopecurus, Phleum, Phalaris, Paspalum, Digitaria, Panicum, Milium, Agrostis, Stipa, Lagurus, Saccharum, Holcus, Andropogon, Anthistiria, Spinifex, Ischaemum, Tripsacum, Cenchrus, Aegilops, Rottbollia, Aira, Melica, Dactylis, Sesleria, Cynosurus, Lolium, Elymus, Hordeum, Triticum, Secale, Bromus, Festuca, Poa, Uniola, Briza, Avena, Arundo, Oryza, Erharta, Zizania, Uziola, Ardus, Ygeum, Apluda, Zea, Pharus, Olyra, Cornucopiae, Coix, Manisuris, Pommereulla, Remirea, Nastus, Pariana e outros. Classe 3. Ordo 11. PalmaeGenus: Calamus, Phaenix, Areca, Elate, Cocos, Elais, Caryota, Nipa, Corypha, Licuala, Latania, Lontarus, Chamaerops, Mauritia. Ordo 12. AsparagiGenus: Dracaena, Dianella, Hipogonum, Flagellaria, Asparagus, Callixene, Philesia, Medeola, Trillium, Paris, Convallaria, Ruscus, Smilax, Dioscorea, Tamnus, Rajania. Ordo 13. JunciGenus: Eriocaulum, Restio, Xyris, Aphyllantes, Juncus, Rapatea, Pollia, Callisia, Commelina, Tradescantia, Butomus, Damasonium, Alisma, Sagittaria, Cabomba, Scheuchzeria, Triglochin, Arthecium, Elonias, Veratrum, Colchicum. Ordo 14. LiliaGenus: Tulipa, Erythronium, Methonica, Uvularia, Fritillaria, Lialis. Ordo 15. BromeliaeGenus: Burmannia, Tillandsia, Xerophyta, Bromelia, Agave. Ordo 16. AsphodeliGenus: Aletris, Aloe, Anthericum, Phalangium, Asphodelus, Basilaea, Hyacinthus, Phormium, Massonia, Cyanella, Albuca, Scilla, Ornithogalum, Allium. Ordo 17. NarcissiGenus: Gethyllis, Bulbocodium, Hemerocallis, Crinum, Tulbagia, Haemanthus, Amaryllis, Pancratium, Narcissus, Leucoium, Galanthus, Hypoxis, Pontederia, Polianthes, Alstroemeria, Tacca. Ordo 18. IridesGenus: Galaxia, Sisyrinchium, Tigridia, Ferraria, Iris, Moraea, Ixia, Cipura, Watsonia, Gladiolus, Antholysa, Witsenia, Tapeinia, Crocus, Xiphidium, Wachendorfia, Dilatris, Argolasia. Classe 4. Ordo 19. MusaeGenus: Musa, Heliconia, Ravenala. Ordo 20. CannaeGenus: Catimbium, Canna, Globba, Myrosma, Amomum, Costus, Alpinia, Maranta, Thalia, Curcuma, Kaempferia. Ordo 21. OrchideaeGenus: Orchis, Satyrium, Ophrys, Serapias, Limodorum, Thelymitra, Disa, Cypripedium, Bipinnula, Arethusa, Fogonia, Epidendrum, Vanilla. Ordo 22. HydrocharidesGenus: Vallisneria, Stratiotes, Hydrocharis, Nynphaea, Nelumbium, Trapa, Proserpinaca, Pistia.
Dicotyledones III. Dicotyledones (dvouděložné) A. Monoclinae (jednodomé, květy oboupohlavné) a) Apetalae (bezkorunné) Classe 5. Ordo 23. AristolochiaeGenus: Aristolochia, Asarum, Cytinus. Classe 6. Ordo 24. ElaeagniGenus: Thesium, Quinchamalium, Osyris, Fusanus, Hippophae, Elaeagnus, Nyssa, Conocarpus, Bucida, Terminalia, Chuncoa, Pamea, Tanibouca. Ordo 25. ThymelaeaeGenus: Dirca, Lagetta, Daphne, Passerina, Stellera, Struthiola, Lachnea, Dais, Gnidia, Nectandra, Quisqualis. Ordo 26. ProteaeGenus: Protea, Banksia, Roupala, Brabeium, Embothrium. Ordo 27. LauriGenus: Laurus, Ocotea, Ajovea, Myristica, Virola, Hernandia. Ordo 28. PolygoneaeGenus: Coccoloba, Atraphaxis, Polygonum, Rumex, Rheum, Triplaris, Calligonum, Pallasia, Koenigia. Ordo 29. AtriplecesGenus: Phytolacca, Rivinia, Salvadora, Bosea, Petiveria, Polycnemum, Camphorosma, Galenia, Basella, Anredera, Anabasis, Caroxylum, Salsola, Spinacia, Acnida, Beta, Chenopodium, Atriplex, Crucita, Axyris, Blitum, Ceratocarpus, Salicornia, Coryspermum. Classe 7. Ordo 30. AmaranthiGenus: Amaranthus, Celosia, Aerua, Digera, Iresine, Achyranthes, Gomphrena, Illecebrum, Paronychia, Herniaria. Ordo 31. PlantaginesGenus: Psyllium, Plantago, Littorella. Ordo 32. NyctaginesGenus: Nyctago, Boerhaavia, Pisonia, Buginvillaea. Ordo 33. PlumbaginesGenus: Plumbago, Statice. b) Monopetalae (srostloplátečné, korunní lístky srostlé) Classe 8. Ordo 34. LysimachiaeGenus: Centunculus, Anagallis, Lysimachia, Hottonia, Coris, Sheffieldia, Limosella, Trientalis, Aretia, Androsace, Primula, Cortusa, Soldanella, Dodecatheon, Cyclamen, Globularia, Conobea, Tozzia, Samolus, Utricularia, Pinguicula, Menyanthes. Ordo 35. PedicularesGenus: Polygala, Veronica, Sibthorpia, Disandra, Ourisia, Piripea, Erinus, Manulea, Castilleia, Euphrasia, Buchnera, Bartsia, Pedicularis, Rhinananthus, Melampyrum, Hyobanche, Obolaria, Orobanche, Lathraea. Ordo 36. AcanthiGenus: Acanthus, Dilivaria, Blepharis, Thumbergia, Barleria, Ruellia, Justicia, Dianthera. Ordo 37. JasmineaeGenus: Nyctanthes, Lilac, Hebe, Fraxinus, Chionanthus, Olea, Phyllirea, Mogorium, Jasminum, Ligustrum. Ordo 38. ViticesGenus: Clerodendrum, Volkameria, Aegiphila, Vitex, Callicarpa, Manabea, Premna, Petitia, Cornutia, Gmelina, Theca, Avicennia, Petraea, Citharexilum, Duranta, Verbena, Eranthemum, Selago, Hebenstretia, etc. Ordo 39. LabiataeGenus: Lycopus, Amethystea, Cunila, Ziziphora, Monarda, Rosmarinus, Salvia, Colinsonia, Bugula, Teucrium, Satureia, Nepeta, Lavandula, Mentha, Lamium, Galeopsis, Betonica, Stachys, Ballota, Marribium, Leonurus, Phlomis, Molucella, Origanum, Clinopodium, Thymus, Dracocephalum, Horminum, Mellitis, Germanea, Ocimum, Trichostema, Brunella Scutellaria, etc. Ordo 40. ScrophulariaeGenus: Buddleia, Scoparia, Russelia, Capraria, Stemodia, Halleria, Galvezia, Achimenes, Scrophularia, Matourea, Dodartia, Gerardia, Cymbaria, Linaria, Antirrhinum, Hemimeris, Digitalis, Paederota, Calceolaria, Baea, Columnea, Besleria, Cyrtandra, Gratiola, Torenia, Vandellia, Lindernia, Mimulus, Polypremum, Montira, Chwalbea, Schwenkia, Browallia. Ordo 41. Solaneae Genus: Celsia, Verbascum, Hyoscyamus, Nicotiana, Datura, Triguera, Jaborosa, Mandragora, Atropa, Nicandra, Physalis, Aquartia, Solanum, Capsicum, Lycium, Cestrum, Bontia, Brunfelsia, Crescentia. Ordo 42. Borragineae (Boragineae) Genus: Patagonula, Cordia, Ehretia, Menais, Arronia, Ournefortia, Hydrophillum, Phacelia, Ellisia, Dichondra, Messerschmidia, Cerinthe, Coldenia, Heliotropium, Echium, Lithospermum, Pulmonaria, Onosma, Symphytum, Lycopsis, Myosotis, Anchusa, Borrago, Asperugo, Cynoglossum, Nolana, Siphonanthus, Falkia. Ordo 43. ConvolvuliGenus: Maripa, Mouroucoa, Retzia, Convolvulus, Ipomaea, Evolvulus, Nama, Hydrolea, Sagonea, Cressa, Cuscuta, Diapensia, Loeselia. Ordo 44. PolemoniaGenus: Phlox, Polemonium, Cantua, Hoitzia. Ordo 45. BignoniaeGenus: Chelone, Sesamum, Incarvillea, Millingtonia, Jacaranda, Catalpa, Tecoma, Bignonia, Tourretia, Martynia, Craniolaria, Pedalium. Ordo 46. GentianaeGenus: Gentiana, Vohiria, Coutoubea, Swertia, Chlora, Exacum, Lisianthus, Tachia, Chironia, Nigrina, Spigelia, Ophiorrhiza, Potalia. Ordo 47. ApocineaeGenus: Vinca, Matelea, Ochrosia, Tabernaemontana, Cameraria, Plumeria, Nerium, Echites, Ceropegia, Pergularia, Stapelia, Periploca, Apocinum, Cynanchum, Asclepias, Ambelania, Pacouria, Allamanda, Melodinus, Gynopogon, Raulvolfia, Ophioxylon, Cerbera, Carissa, Strychnos, Theophrasta, Anasser, Fagraea, Gelsemium. Ordo 48. SapoteaeGenus: Jacquinia, Manglilla, Sideroxilum, Bassia, Mimusops, Imbricaria, Chrysophyllum, Lucuma, Achras, Myrsine, Inocarpus, Olax, Leea. Classe 9. Corola perigínica (quando a corola se insere à volta do nível do ovário) Ordo 49. GuaiacanaeGenus: Diospyros, Royena, Pouteria, Styrax, Halesia, Alstonia, Symplocos, Ciponima, Paralea, Hopea. Ordo 50. RhododendraGenus: Kalmia, Rhododendrum, Azalea, Rhodora, Ledum, Befaria, Itea. Ordo 51. EricaeGenus: Cyrilla, Blaeria, Erica, Andromeda, Arbutus, Clethra, Pyrola, Epigaea, Epacris, Gaultheria, Brossaea, Argophyllum, Vaccinium, Empetrum, Hudsonia. Ordo 52. CampanulaceaeGenus: Ceratostema, Forgesia, Mindium, Canarina, Campanula, Trachelium, Roella, Gesneria, Cyphia, Scaevola, Phyteuma, Lobelia. Classe 10. Ordo 53. CichoraceaeGenus: Lampsana, Rhagadiolus, Prenanthes, Chondrilla, Lactuca, Sonchus, Hieracium, Crepis, Drepania, Hedypnois, Hyoseris, Taraxacum, Leontodon, Picris, Helmintia, Scorzonera, Tragopogon, Urospermum, Geropogon, Hypochaeris, etc. Ordo 54. CinarocephalaeGenus: Atractulis, Cnicus, Carthamus, Carlina, Arctium, Carduus, Crocodilium, Calcitrapa, Seridia, Jacea, Cyanus, Zoegea, Rhaponticum, Centaurea, Pacourina, Serratula, Pteronia, Staehelina, Jungia, Nassauvia, Gundelia, Echinops, Corymbium, Sphaeranthus, etc. Ordo 55. CorymbiferaeGenus: Kuhnia, Cacalia, Eupatorium, Ageratum, Elephantopus, Chuquiraga, Mutisia, Barnadesia, Xeranthemum, Gnaphalium, Filago, Leysera, Shawia, Seriphium, Staebe, Conyza, Baccharis, Chrysocoma, Erigeron, Aster, Inula, Tussilago, Senesio, Tagetes, Doronicum, Calendula, Chrysanthemum, Pectis, Bellium, Arnica, Gorteria, Matricaria, Bellis, Cotula, Adenostemma, Struchium, Grangea, Ethulia, Carpesium, Hippia, Tanacetum, Artemisia, Tarchonanthus, Calea, Athanasia, Micropus, Santolina, Anacyclus, Anthemis, Achillea, Eriocephalus, Buphtalmum, Osmites, Encelia, Sclerocarpus, Unxia, Flaveria, Milleria, Sigesbeckia, Polymnia, Baltimora, Eclipta, Spilanthus, Bidens, Verbesina, Coreopsis, Zinnia, Ballieria, Silphium, Melampodium, Chrysogonum, Helianthus, Helenium, Rudbeckia, Tithonia, Galardia, Wedelia, Oedera, Agriphyllum, Arctotis, Tridax, Amellus, Pardisium, Ceruana, Iva, Clibadium, Parthenium, Ambrosia, Xanthium, Nephelium, etc. Classe 11. Ordo 56. DipsaceaeGenus: Morina, Dipsacus, Scabiosa, Knautia, Allionia, Valeriana, etc.