BOTANY. 253 
As a general view of the orders in the Linnsean system, it is 
proper to remark that, in the fourteenth class, the orders depend 
upon the seeds having a seed-vessel or not. In the fifteenth 
class, they depend upon the shape or form of the seed-vessels. 
In the nineteenth class, they depend on the structure of the flo¬ 
rets. In the twentieth class, they depend upon the natural as¬ 
semblage of plants resembling each other. And in all the oth¬ 
er classes, excepting the sixteenth, seventeenth, and eighteenth, 
the orders depend upon the number of pistils only. To deter¬ 
mine the number of pistils, the styles must be counted, as they 
appear at their base ; but if the summits are not supported by 
styles, then count the number of the summits. 
The following is a brief view of the classes and orders in the 
Linnsean system, with examples of each order: — 
Order —Monagynia, 
Digynia, 
Tetragynia, 
Order —Monagynia, 
Digynia, 
Order —Monagynia, 
Digynia, 
Trigynia, 
Enneagynia, 
Order —Monagynia, 
Digynia, 
Trigynia, 
Tetragynia, 
Order —Monagynia, 
Digynia, 
Trigynia, 
Tetragynia, 
Pentagynia, 
Polygynia, 
Order —Monagynia, 
I. MONANDRIA. 
1 pistil, marestail, stonewort. 
2 pistils, Indian weed, water-fennel. 
4 pistils, pondweed. 
II. DIANDRIA. 
1 pistil, Culver’s physic, privet. 
2 pistils, sweet-vernal-grass. 
III. TRIANDRIA. 
1 pistil, redroot, wild-vine. 
2 pistils, redtop-grass, orchard grass. 
3 pistils, succulent chickweed. 
9 pistils, blackberried heath. 
IV. TETRANDRIA. 
1 pistil, white dogwood, button-bush. 
2 pistils, witch-hazel, toadgrass. 
3 pistils, pondweed, box. 
4 pistils, evergreen holly. 
V. PENTANDRIA. 
1 pistil, 
2 pistils, 
3 pistils, 
4 pistils, 
5 pistils, 
many pistils, 
tomatoes, thorn-apple, 
carrot, slippery-elm. 
sumach, blackberried elder, 
grass of Parnassus, 
angelica, flax, shotbush. 
mouse-ear. 
VI. HEXANDRIA. 
1 pistil, common tulip. 
W 
