173 
5. Hortictiitural varieties derived from wild species by plant 
breeding. 
Most of the plants in the General Systematic Section do not 
occur in the Local Flora area, as defined on page 164, but a few 
Local Flora plants are included in enoube not otherwise repre- 
sented. 
Classification of Plants 
The Plant Kingdom may be divided into the following groups, 
the figures in parentheses indicating the approximate number of 
families in each group: 
af ee Saas without seeds) 
hallophyt 
d. Horsetails (1) 
e. Ferns (17) 
2. Phanerogams (Plants with seeds) 
a. Gymnosperms (Naked seeds) 
Cycadales (Tropical and Sub-Tropical only) (1) 
Ginkgoales (Maidenhair Tree) 
Coniferales (Conifers) (7) 
Gnetales (Joint Firs) (3) 
b. Angiosperms or Flowering Plants (Seeds enclosed in an ovary) 
a. Dicotyledons (with two seed-leaves) (254) 
b. Monocotyledons (with one seed-leaf) (45) 
All the larger groups above listed are again subdivided into successive 
groups, as follows: 
Order (a group of related Families) 
Family (a group of related Genera) 
Genus (a group of related Species) 
Species (a group of closely related Individuals ) 
A species may be further subdivided into Varieties or forms) 
Individual (the unit of the Plant ee 
The Latin names of the Orders end in -ales, Cycadales (Cycad 
Order), Papaverales (Poppy Order); of the aries (with few excep- 
tions) in -aceae, e.g., Cycadaceae (Cycad Family), Papaveraceae (Poppy 
Family . 
