This dictionary covers all aspects of pure and applied plant science, including the taxonomy and classification of plants, with entries for the higher-ranking taxa. Techniques of nucleic acid technology are included, with references made to applications in horticulture and agriculture. The Facts On File Dictionary of Botany covers sections on Organisms and Populations as well as Molecules and Cells.

Entries include:
* Asexual reproduction
* Binomial nomenclature
* Blue-green algae
* Chloroplast
* Contractile roots
* DDT
* Flowering plants
* Gemma
* Kranz structure
* Living fossil
* Neo-Darwinism
* Night-break effect
* Paleoecology
* Photosynthesis
* Raunkiaer’s plant
* Shikimic acid
* Short-day plant
* Vegetative nucleus
* Xanthopyll