1. Classifying Ornamental Plants

2. Objectives Describe systems used for classifying plants.
Describe the differences between annuals, biennials, and perennials.
Identify the major groups of plants.

3. Plant Classification
A means of grouping plants according to their similarities, such as their botanical and descriptive characteristics.
For example:
Flowering patterns
Stems
Life structures
Life Cycles
Genetics, etc.

4. Plant Classification
This systematic classification is referred to as, Taxonomy.
People who study plant characteristics are called, Taxonomist.

5. Plant Classification Botanical:
Identifies plants according to their physical characteristics.
Descriptive:
System that identifies plants by their use and life cycle.

6. Plant Classification Botanical: Categories:
This systems characteristics are classified using 7 categories, from general to specific.
Categories:
Kingdom
Phylum
Class
Order
Family
Genus
Species

7. Plant Classification Honey locust Tree: Plantae Tracheophyta
Angiospermopsida
Rosales
Leguminosae
Gleditsia
Triacanthos

8. Plant Classification
All plants are in the Kingdom: Plantae (plants with tissue specialized for conducting materials). And all are in the Phylum: Tracheophyta.
There are many Classes, Orders, and Families of plants.
Even though each plant is categorized using at least seven names, we call plants by only their last two scientific names: Genus, Species.

9. Plant Classification
This is a naming system called Binomial Nomenclature (which means a two-name system of identifying).
Genus: (Upper case)
Species: (Lower case)
This classification system was developed by Carolus Linnaeus.

10. Plant Classification
Genus: Is a group of plants that are similar to each other.
Species: Is a group of plant that are genetically similar in that they can pollinate each other.

11. Plant Classification Gerber Daisy: (Common Name)
Gerbera jamesonii
Poinsettias: (Common Name)
Euphorbia pulcherrima
Japanese Elm Tree: (Common Name)
Ulmus davidiana var. japonica

12. Plant Classification
When classifying plants they are classified more by their stem types, foliage retention and flowering patterns (visual characteristics)
Also, plants are classified by their life structures, life cycle and genetics.

13. Plant Classification Vegetative Growth Period
The life structure and cycle is based on their;
Vegetative Growth Period
(leaves, stem)
Reproductive Growth Period
(asexual, sexual, seeds, etc.)
Dormancy Growth Period
(winter, summer, fall and spring)

14. Plant Classification
Plants are divided into three (3) life cycles (start to finish).
Annuals: Complete their life cycle in one growing season.
Biennials: Completes their life cycle in two growing seasons.
Perennials: Plants that live for three or more growing seasons.

15. Annuals They have to be replanted every year.
Have an Herbaceous stem, which is a stem with no woody tissue in it
Summer Annuals:
Planted in spring, harvested in fall
Winter Annuals:
Planted in fall, harvested in following summer
Petunias, Marigolds, Geraniums, impatiens, etc.

16. Biennials
Complete their vegetative growth in the first year, and then usually flowers during their second season.
They must also be replanted every year.
Cabbage, beets, carrots (vegetables)

17. Perennials Herbaceous: Shrubs Woody: Maple, Apple, etc.
Flower for a short time. They can be both soft (Herbaceous) and hard woody plants.
Perennials do not usually have a predetermined age of death.
Herbaceous: Shrubs
Woody: Maple, Apple, etc.

18. Major Groups of Plants Bryophytes: Ferns: Gymnosperms: Angiosperms:
The plant kingdom has become successful all over the Earth. They have done so by adapting to a wide variety of different conditions and niches.
The following are some major groups of plants.
Bryophytes:
Ferns:
Gymnosperms:
Angiosperms:

19. Major Groups of Plants Bryophytes:
Non-vascular plants. Live in damp areas.
Mosses, Liverworts

20. Major Groups of Plants Ferns:
Vascular Plants, which produce spores. Have no true leaves.

21. Major Groups of Plants Gymnosperms:
Plants that reproduce with seeds, such as conifers, pines, cedars, and deciduous plants.

22. Major Groups of Plants Angiosperms: Lilies, bedding plants, etc.
Seed plants, whose seeds develop in a fruiting body. Reproduce by flowers.
Lilies, bedding plants, etc.