Glossary of Plant Systematics (1st ed.) by Simpson (2006)
- The traditional study of photosynthetic organisms (including the green plants, red algae, brown plants, dinoflagellates, and euglenoids, but excepting the photosynthetic bacteria), the true fungi, and groups that used to be treated as fungi, such as the Oomycota and slime molds; inclusive of the plant sciences.
Glossary of "Biology (3rd ed.)" by Hardin & Bajema (1978)
- the scientific study of plants.
- Hardin, G. & Bajema, C. 1978. Biology, its Principles and Implications, third edition. -x + 790 pp. W. H. Freeman and Company, San Francisco.
- Simpson, M. G. 2006. Plant Systematics. -xi + 590 pp. Elsevier Academic Press, Oxford.