- Plant Sciences 8
- Plant Systematics/Taxonomy/Biogeography 4
- Plant Anatomy/Development 3
- Plant Ecology 3
- Biochemistry, general 2
- Biotechnology 2
- Cell Biology 2
- Organic Chemistry 2
- Plant Biochemistry 2
- Agriculture 1
- Biomedicine, general 1
- Forestry 1
- Life Sciences, general 1
- Pharmacology/Toxicology 1
- Plant Genetics and Genomics 1
- Plant Pathology 1
- Plant Physiology 1