BASICS: CLASSIFICATION, NOMENCLATURE, AND KEY MAKING

Objectives for this section are to learn:
  • the differences between classification, nomenclature, and identification
  • the definition of : circumscription, rank, taxa, taxon, dichotomous, key, character, couplet
  • the ranked hierarchy used in flowering plant classification and the associated word endings
  • how to write and interpret species names, including the authority
  • the characteristics of a well-written dichotomous key

The parts of today's lesson are

Taxonomy

1. Two views on taxonomy

2. Uses of taxonomy


I. INTRODUCTION

A. Classification--

B. Rank--

C. Circumscription--


II. HOW ALL THIS APPLIES TO PLANTS--

A. The system--

B. Example #1--

C. Example #2--(bottom up, this time)

III. NOMENCLATURE--

A. General--

B. The formula--

C. Example

Callirhoe involucrata (Torr.) Gray

IV. KEYS

A. Purpose--

B. Definition--

C. Guidelines--

D. Strategy--

E. Example--



NOW: The TA may have the students develop a key to identify themselves. Stress good, constant characters. Test run a few students through the resulting key.

Continue with the Exercise in Basic Taxonomy
Go back to the Table of Contents for the lab
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last updated 28 FJanuary 2010 by MDR