XT1U CLASSES AXD ORDERS OF LINfLEAN SYSTEM. 
The Orders of the first thirteen Classes are founded on the number 
of Styles in each flower : 
Monogynia, 1 Style ; Digynta, 2; Trigynia, 3; Tetka- 
gynia, 4; Pentagynia, 5: Hexagynia. 6; Hepta- 
gynia, 7; Octogynia, 8 ; Decagynia, 10; Dodeca- 
gynia, 12; Polygynia, many Styles. 
The Orders of the 14th Class are two : 
1. Gymnospermia . . Seeds 4, apparently naked. 
2. Angiospermia . . Seeds several in a seed-vessel. 
The Orders of the 15th Class are two: 
1. Siliculosa . . . Seeds in a short Pod or Pouch. 
2. Siliquosa .- . . . Seeds in a long Pod. 
In the 16th, 17th, and 18th Classes, the Orders are founded on the 
number of Stamens in each set: 
Triandria, 3; Pentandria, 5; Decandria, 10, &c., in 
each set. 
The Orders of the 19th Class are three, and are founded on the struc- 
ture of the flower, which is compound : 
1. JEqualis . 
2. SuPERFLUA 
3. FRUSTRANEA 
. All the florets perfect, 
f Florets of the disk perfect ; of the 
\ ray, with Pistil only. 
J Florets of the disk perfect; of the ray, 
^ with neither Stamens nor Pistil. 
The Orders of the 20th Class are founded on the number of the 
Stamens : 
Monandria, 1 ; Diandria, 2, &c. 
The Orders of the 21st and 22d Classes are founded on the number, 
union, and situation of the Stamens : 
Monandria, Diandria, See. Monadelphia, &c. 
The Orders of the 23rd Class are three, and are : 
Moncbcia, perfect flowers, accompanied with others that 
are barren or sterile (without pistil ), or fertile (without 
stamens), or both, all on one plant. 
Dicecia, perfect flowers on one plant, barren or fertile or 
both on another. 
Tricecia, perfect flowers on one plant, fertile on a second, 
and barren on a third. 
The Orders of the 24th Class are Natural Orders or Families: 
1. Filices 1 ; 2. Musci ; 3. Hepatice ; 4. Lichenes ; 
5. Fungi ; 6. Charace.® ; 7. Alg.e. 
1 In the following pages considered a subclass ; including Polypodiacece, Osmun- 
dacecE, Ophioglossaccce, LycopoUiacue , Marsileacete , and Equisetacecc. 
