Hep to the System of South 
Australian Plants. 
CLASSES AND MAIN DIVISIONS 
OF PLANTS. 
CLASS I.—DICOTYLEDONS. 
Embryo with two, rarely more, seed-lobes. Floral organs usually in 
fours or fives. Veins of leaves mostly reticulate. Woody stems with a 
central pith, surrounded by concentric layers of wood, and an exterior 
bark. 
DIVISION I.—ANGIOSPERMS. 
Stigma present. Ovule within an ovary. Cotyledons two, rarely more. 
Sub-Class I.—Choripetaleae Hypogynae. 
Petals distinct, rarely united, sometimes absent. Ovary superior, quite 
free from the other floral structures. Stamens inserted at the base or 
below the ovary. 
Sub-Class II.—Choripetaleae Perigynae. 
Petals usually distinct, rarely absent. Ovary free from or adnate to the 
calyx. Stamens inserted on the calyx. 
Sub-Class III.—Synpetaleae Perigynae. 
Petals united, rarely distinct or absent. Ovary adnate to the calyx tube. 
Stamens inserted on the corolla, or in Candolleaceae adnate to the style. 
