NATURAL METHOD OF JUSSIEU. 
ORDERS. GENERA. 
The plan of this system was originally formed by Bernard 
Jussieu, demonstrator of botany at Paris, and published by his 
nephew, Anthony Lawrence, in 1789, in a work entitled Genera 
Plantarum, secundum Ordines Naturales disposita. The fol- 
lowing divisions of this system are founded upon the structure 
of the seed, whence is derived the distinction of all plants into 
Acotyledones, destitute of a cotyledon or seed-lobe ; Monoco- 
tyledones, such as have one cotyledon ; and Dicotyledones, 
such as have two. The classes, amounting to fifteen, (embra- 
cing 100 orders,) are distinguished by the number of the cotyle- 
dons, petals, &c. and the mode of insertion of the stamens or 
corolla. 
WITHOUT COTYLEDONS. 
ORDERS. GENERA. 
Class I. — Analogous to Linnaeus's twenty-fourth class, Cryptogamia. 
1. Fungi 
2. Alg® 
3. Hepatic® 
4. Musci 
5. Filices 
6. Naiades 
Agaricus, Boletus, &c. 
Fucus, Lichen, &c. 
Jungermannia, Sec. 
Hypnuin, Bryum, Sec. 
Pteris, Polypodium, &c. 
Hippuvis, Lemma, Sec. 
WITH ONE COTYLEDON. 
7. Aroide® 
8. Typli® 
9. Cyperoide® 
10. Gramineae 
Class II — .Germen superior. 
Arum, Sec. 
Typha, Sparganiuin. 
Cyperus, Carex, Scirpur, &c. 
The true grasses. 
Class III. — Stamens inserted round the pistil. 
11. Palm® 
12. Asparagi 
13. Junei 
14. Lilia 
15. Bromeli® 
16. Asphodeli 
17. Narcissi 
18. Irides 
Phoenix, Cocos, &c. 
Asparagus, Convallaria, &c. 
Juncus, Butomus, Sagittaria. 
Lilium, Tulipa, Fritillaria, Sec. 
Bromelia, Agave. 
Asphodelus, Aloe, Hyaciuthus. 
Narcissus, Amaryllis, Galanthus. 
Iris, Ixia, Crocus. 
Class IV. — Germen inferior. 
19. Musae Plantain-tree and Heliconia. 
20. Canri® Scitamine®, as Canna, Auiomum. 
21. Orchideae Orchis, Ophrys. 
22. Hydrocharides Vallisneria, Stratiotes. 
WITH TWO COTYLEDONS. 
Class V .—Without petals, germen inferior. 
23. Aristolochiae Aristolochia, Asnrum. 
Class VI. — Without petals, stamens inserted into the calyx 
24. Elaeagni Hippophae, Thesi um, Sec. 
25. Thymeleae Daphne, Passerina, Sec. 
26. Proteae Protea, Banksia, Embothrium. 
27. Lauri Laurus, &c. 
28. Polygoneae Polygonum, Rumex, Rheum. 
29. Atriplices Chenopodium, Atriplex, Sec. 
Class 
30. Amaranthi 
31. Plantagines 
32. Nyctagines 
33. Plumbagines 
VII. — Without petals, germen superior. 
Amaranthus, Celosia. 
Plantago, Littorella. 
Mirabilis, Boerhaavia, Sec. 
Plumbago, and Statice. 
Class 
34. Lysimachiae 
35. Pediculares 
36. Acanthia 
37. Jasmineae 
38. Vitices 
39. Labiatae 
40. Scrophulariae 
41. Solane® 
VIII. — One petal, germen superior. 
Anogallis, Primula, &c. 
Pedicularis, Veronica, Euphrasia. 
Acanthus, Kuellia, Justicia. 
Jasininum, Syringa, Fraxinus. 
Vitex, Verbena, &c. 
Salvia, Lamium, Glechoma, &c. 
Scrophularia, Digitalis. 
Solanum, Verbascum, Hyoscyamus. 
42. Boragineae 
43. Convolvuli 
44. Polemonia 
45. Bignoniae 
46. Ger.tianae 
47. Apocyni® 
48 Sapotae 
Borago, Echium. 
Convolvulus, Ipomaea. 
Polemonium, Phlox, Sec. 
Bignonia, Chelone. 
Gentiana, Chironia, Chlora. 
Vinca, Nerium, Sec. 
Achras, Chrysophyllum. 
Class IX. — One petal inserted into the calyx. 
49. Guaiacan® 
50. Rhododendra 
51. Ericae 
52. Campanulaceae 
Diospyros, Styrax. 
Rhododendrum, Kalmia, Azalea. 
Erica, Arbutus, Vaccinium. 
Campanula, Tracheliuin. 
Class X. — One petal, anthers united into a tube. 
53. Cichoraceae Leontodon, Tragopogon, Sonchus. 
54. Cinarocephalae Carduus, Carlina, Carthamus. 
55. Corymbiferae Chrysanthemum, Artemisia, Senecio. 
Class XI. — One petal, germen inferior, anthers distinct. 
56. Dipsaceae Dipsacus, Scabiosa. 
57. Rubiaceae Galium, Rubia, Coflea. 
58. Caprifolia l.onicera, Sambucus, Cornus, Hedera. 
Class XII.— Several petals, germen inferior. 
59. Arabs: Cussonia, Panex. 
60. Uinbellifer* Scandix, Angelica, Daticus. 
Class XIII. — Several petals, germen superior. 
61. Rannncnlaceae 
62. Papaveraceae 
63. Crucifers 
64. Capparides 
65. Sapindi 
66. Acera 
67. Malpighi® 
68. Hyperica 
69. Guttifer® 
70. Aurantia 
71. Meli® 
72. Vites 
73. Gerania 
74. Malvaceae 
75. Magnolias 
76. Anun® 
77. Menisperma 
78. Bprberides 
79. Tiliaces 
80. Cisti 
81. Rutace® 
82. Caryophylle® 
Ranunculus, Clematis, Anemone, Sec. 
Papaver, Chelidonium. 
Brassica, Cheiranthus, 8ec. 
Cleome, Capparis, Sec. 
Sapindus, Paullinia. 
Acer, &c. 
Malpighia. 
Hypericum, Aseyruin, &c. 
Clusia, Garcinia, Mammea. 
Citrus, Limonia, Thea, &c. 
Turr®a, Aitonia. 
Vitis, Cissus. 
Geranium, Impatiens, Oxalis. 
Malva, Lavatera, Hibiscus, and others. 
Magnolia, Liriodendrum. 
Anona, Unona. 
Menispermum, Cissampelos, &c. 
Berberis, Leontice. 
Tilia, Hermannia, Sparmannia, Sec. 
Cistus, &c. 
Ruta, Dictamnus. 
Arenaria, Dianthus, Silene, See. 
Class XIV. — Several petals , stamens inserted into the calyx or corolla. 
83. Seinperviv® 
84. Sax i frag® 
85. Cacti 
86. Portulace® 
87. Fico'ide® 
88. Onagr® 
89. Myrti 
90. Melasto® 
91. Salicari® 
92. Rosace® 
93. Leguminos® 
94. Terebintace® 
95. Rhamni 
Sempervivum, Cotyledon, Sedum. 
Saxifraga, Chrysosplenium, Sec. 
Cactus, Ribes. 
Portulaca, See. 
Mesembryanthemum. 
Epilobium, Fuchsia. 
Myrtus, Eugenia, Eucalyptus, Sec. 
Melastoma, Osbeckia. 
Lyihrum, Peplis, Glanx, &c. 
Rosa, Uubus, Prunus, 
Cassia, Trifolium, Vicia. 
Pistacia, Rhus, &c. 
Rhamnus, Ilex, Euonymus. 
Class XV. — Stamens in separate flowers from the pistils. 
96. Euphorhi® 
97. Cucurbitace® 
98. Urtiee® 
99. Amentace® 
100. Conifer® 
Euphorbia, Buxus, Croton. 
Cucumis, Passiflora, Bryonia, See. 
Urtica, Ficus, Humulus, Cannabis. 
Salix, Populus, Betula, Quercus, Sec. 
Juniperus, Cupressus. 
F 
