BOTANY. 53 
Class V. Pentandria with five stamens. 
és VI. Hexandria ¢ six 6“ 
“ VII. Heptandria “ seven = 
"2 VIII. Octandria «eight # 
a IX. Enneandria “ nine $f 
. X. Decandria “« ten 4 
- XI. Dodecandria “ 12to19 * 
- XII. Icosandria “ 20ormore “ inserted on calyx. 
? XIII. Polyandria “ 20ormore “ ; “ receptacle. 
b. Stamens of different lengths : 
Class XIV. Didynamia “two short and two long stamens. 
ee XV. Tetradynamia “ two short and four long. 
2. Stamens united. 
a. By filaments : : 
Class XVI. Monadelphia “ stamens in one bundle. 
i XVII. Diadelphia “ “ in two bundles. 
“« XVIII. Polyadelphia “ “ in more than two bundles. 
b. By anthers (compound flowers) : 
Class XIX. Syngenesia “ “ united by anthers. 
a XX. Gynandria =“ «and pistil on a column. 
II. Stamens and pistil in different flowers. 
1. On the same plant: 
Class XXI. Moneecia. 
2. On different plants: 
Class XXII. Dicecia. 
III. Stamens and pistils in the same or in different flowers, on the same or on different 
plants : 
Class XXIII. Polygamia. 
B. Cryrrocamia (flowers absent) : 
Class XXIV. Cryptogamia. 
Tabular View of the OrpeRs of the Linnean System. 
A. Classes I to XIII. subdivide into: 
Order 1. Monogynia with one free style. 
A 2. Digynia “ two “ styles. 
“ 3. Trigynia “ three rs 55 
Be 4. Tetragynia “ four € ¢ 
€ 5. Pentagynia “ five ¢ és 
= 6. Hexagynia “ six ¢ « 
a 7. Heptagynia “ seven bi 3 
. 8. Octogynia « eight $ a“ 
a 9. Enneagynia “ nine ‘ 
“ 10. Decagynia e ten “ 
“ 11. Dodecagynia “ 12t019 “ % 
“« 12. Polygynia “20 or more “ ff 
B. Class XIV. subdivides into : 
Order 1. Gymnospermia with the fruit formed by four Achenia. 
« 2. Angiospermia “ “ “ a two-celled capsule with many seeds. 
C. Class XV. subdivides into: 
Order 1. Siliculosa: fruit, a Silicula. 
« Q. Siliquosa: fruit, a Siliqua. 
D. Classes XVI. to XVIII. subdivide into : 
Orders: Triandria, Tetrandria, Decandria, &c., according to the number of 
stamens. 
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