1. Plant Names and Classification
Chapter 16
Lecture Outline
Plant Names and Classification
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2. Outline Introduction Binomial System of Nomenclature
The International Code of Botanical Nomenclature
Domain & Kingdom Concept
Classification of Major Groups
The Species Concept

3. Classification of Major Groups
3 domains:
Bacteria,
Archaea,
Eukarya
Domains broken up into Kingdoms
Protista
Fungi
Plantae
Animalia
Kingdoms broken up into Phyla

4. PLANT PHYLA
For the Plant Kingdom: There are approximately 12 Phyla

5. Phylum Polypodiophyta Phylum Bryophyta
Phylum Coniferophyta
Phylum ??? = Angiosperms

6. The Domain & Kingdom Concept
TAXONOMIC CLASSIFICATION– grouping of similar organisms into groups
MEMORY AID
Domain Do
Kingdom Keep
Phylum Philip’s
Class Clothes
Order On
Family For
Genus Goodness
Species Sakes

7. Binomial System of Nomenclature
All species given a unique two word name representing the GENUS and SPECIES names.
Spearmint: Mentha spicata L.
A page from Species Plantarum by Linnaeus

8. Classification of Major Groups
Example: onion
Domain Eukarya
Kingdom: Plantae
Phylum: Angiosperm
Class: Monocot

9. Genus: Allium Species: Allium cepa L. Allium Flavum
Allium Schoenoprasum

10. Example: California Rose
Domain Eukarya
Kingdom: Plantae
Phylum: Angiosperm

11. Class: Eudicot Order: Rosales Family: Rosaceae Spiraea douglassii
Geum macrophyllum

12. Species: Rosa californica
Genus: Rosa
Species: Rosa californica
Rosa Gymnocarpa
Rosa Woodsii

13. Class: Moncot Order: Liliales Family: Liliaceae

14. COMMON NAMES: Unreliable
Examples
Dicentra cucullaria - Many common names: Dutchman’s breeches, little-boy’s breeches, monkshood, boys-and-girls, soldier’s cap, white hearts,…, plus others in different languages
Monkshood is common name for Dicentra cucullaria and for Aconitum species, which is in a different family.

15. The International Code of Botanical Nomenclature
Book that standardizes rules governing the naming and classification of plants
Two steps for a new plant species:
Latin description of plant must be published in a journal or other public publication.
Author must designate type specimen that is deposited in a herbarium.

16. The Species Concept
Morphological species concept - A species is defined by morphology.
Interbreeding species concept - A species is a population capable of interbreeding and is reproductively isolated from other groups.
Ecological species concept - A species is a group of related individuals that occupy a unique ecological niche.