XX1V CLASSIFICATION OF PLANTS. 
40. Serophularic. Crass XII. | 81. Rutacee. 
41. Solanex. 59. Aralie. | 82. Caryophyllex. 
42. Boragines. 60. Umbelliferee. | 
43. Convolvuli. Chis OTT Crass XIV. 
** Polemonia. 61. Ranunculacee. | 83. Sempervive. 
45. Bignonise. 62. Papaveracee. | 84. Saxifrage. 
a Ceouenor 63. Crucifere. 85. Cacti. 
47. ae fone 64. Capparides. 86. Portulacezx. 
48. Sapole. 65. Sapindi. 87. Ficoider. 
Crass IX. 66. Acera. 88. Onagree. 
ib. Giniacann: 67. Malpighie. 89. Myrti. 
Sh. Risdsiaaivs 68. Hyperica. 90. Melastome. 
bi ton: 69. Guttifere. 91. Salicarez. 
9 70. Auranti. 92. Rosacee. 
oe 71. Melix. 93. Leguminose. 
Crass X. 72. Vitis. 94. Terebintacee. 
53. Cichoracee. 73. Geraniz. 95. Rhamni. 
54. Cinarocephale. 74, Malvacee. 
55. Corymbifere, 75. Magnolie. Ctass XV. 
Oia ot ; 6. Anone. | 96. Euphorbie. 
= 7. Menisperme. 97. Cucurbitacee. 
56. Dipsacece. 78. Berberides. 98. Urticeer. 
57. Rubiacee. 79. Tiliacer. 99. Amentacew. 
58. Caprifolia. 80. Cisti. 100. Conifers. 
In 1818, De Candolle, A.P., published his “ Théorie Elémentaire de la 
Botanique, ou Exposition des Principes de la Classification Naturelle et de 
VArt de décrire et d’étudier les Végétaux.” 
In this work is to be found the explanation of the principles which 
guided its clear-minded author to the construction of a method of arrange- 
ment, which has now almost superseded all others, chiefly because of its 
easiness and simplicity. He himself explains the course he has taken to 
the following effect: “ I place Dicotyledons first, because they have the 
greatest number of distinct and separate organs. Then, as I find families 
_ where some of these organs become consolidated, and consequently seem 
__ to disappear, I refer them to a lower rank. The principle gives me the 
following series — : 
- 1. Dicot, edons; —_ polypetalous and hypogynous. 
2. noe 3 att ee. and perigynous. 
ae hse _ monopetalous and perigynous. | 
. ge et oa ” 2 and hypogynous. oe gh 
ee apetalous, or with a single perianth. 
. onocotyledons ; phanzrogamous. S 
ny ” ” eryptogame us. sh 
8. Acotyledons ; leafy and sexual. _ 
9. < : 
gy leafless and without any known sexes, 
