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THE STUDY OF THE SCIENCE OF BOTANY. 
BOTANY. 
ON THE STUDY OF 
THE SCIENCE OF BOTANY. 
BY F. F. ASHFOKD. 
By the system of Linnaeus, plants are disposed according to the 
number, proportion, and situation of the stamina and pistilla (the 
manner of this distribution shall be described hereafter ; I shall at 
present only speak of the divisions of the system in general). The 
lirst grand division of the vegetable kingdom is into twenty-four 
classes; these classes are again subdivided into orders, and again into 
genera; every genus into species, and the species into varieties. The 
three first more immediately respect the theory of the science than the 
other two, which, though systematic divisions, have a nearer relation 
to the practice or practical part, as it is in these that the principal 
improvements in Horticulture and Floriculture are more particularly 
included. 
As the classes and orders of the system will be separately treated of, 
I shall here give, as a commencement, a table, exhibiting at one view 
their titles in the order in which they stand in the system, so that 
the young botanical tyro may have recourse thereto, as he finds an 
occasion. 
CLASSES* 
1. Monandria 
2. Diandria 
3. Triandria 
4. Tetrandria 
5. Pentandria 
6. Hexandria 
7. Heptandria 
8. Octandria 
9. Enneaudria 
10. Decandria 
11. Dodecandria 
12. Icosandria 
13. Polyandria 
14. Didynaruia 
15. Tetradynamia 
16. Monadclpliia 
ORDERS# 
2. Monogynia, Digynia. 
3. Monogynia, Digynia, Trigynia. 
3. Monogynia, Digynia, Trigynia. 
3. Monogynia, Digynia, Tetragynia. 
6. Monogynia, Digynia, Trigynia, Tetragynia, Pentagynia, Polygynia. 
4. Monogynia, Digynia, Trigynia, Polygynia. 
4. Monogynia, Digynia, Tetragynia, Heptagynia. 
4. Monogynia, Digynia, Trigynia, Tetragynia. 
3. Monogynia, Trigynia, Hexagynia. 
5. Monogynia, Digynia, Trigynia, Pentagynia, Decagvnia. 
6. Monogynia, Digynia, Trigynia, Tetragynia, Pentagynia, Dodoca- 
gynia. 
3. Monogynia, Di-pentagynia, Polygynia. 
5. Monogynia, Digynia, Trigynia, Pentagynia, Polygynia. 
2. Gymnospennia, Angiospermia. 
2. Siliculosa, Siliquosa. 
7. Triandria, Pentandria, Heptandria, Octandria, Decandria, Dode- 
candria, Polyandria. 
* v 
