PLB 115-3 General Biology
- PLB 117-3 Plants and Society
- PLB 200-4 General Plant Biology
- PLB 300-4 Plant Diversity
- PLB 301i-3 Environmental Issues in the Contemporary World
- PLB 303i-3 Evolution and Society
- PLB 304-4 Elements of Plant Systematics
- PLB 306-4 Cell Biology
- PLB 317-3 Introduction to Medical Botany
- PLB 320-4 Elements of Plant Physiology
- PLB 335-2 Methods in Genetics
- PLB 337-2 Ecology Laboratory
- PLB 360-3 Introductory Biostatistics
- PLB 390-1 to 3 Readings in Plant Biology
- PLB 400-4 Plant Anatomy
- PLB 410-4 Ecology of Bryophytes
- PLB 415-5 Morphology of Vascular Plants
- PLB 416-3 Limnology (= Zoology 415)
- PLB 419-3 Plant Molecular Biology
- PLB 420-3 Techniques in Plant Molecular Biology
- PLB 425-5 Plant Mineral Nutrition
- PLB 426-3 Plant Genomics and Bioinformatics (= PSGA 426)
- PLB 427-5 Plant Biochemistry
- PLB 430-3 Medicinal Plants (under development)
- PLB 433-4 Introduction to Agricultural Biotechnology (= PSGA 433)
- PLB 435-3 Plant-Insect Interactions
- PLB 439-2 Natural Areas and Rare and Endangered Species
- PLB 440-3 Grassland Ecology
- PLB 443-4 Restoration Ecology
- PLB 444-4 Quantitative Ecology (Ecology and Analysis of Communities)
- PLB 445-5 Wetland Plant Ecology
- PLB 449 -3 Plant Systematics and Evolution
- PLB 450-2 Plant Geography
- PLB 451-4 Flora of Southern Illinois
- PLB 452-4 Plant Population Ecology
- PLB 471-3 Introduction to Systems Biology
- PLB 479-3 Plant Variation
- PLB 480-1 Senior Seminar
- PLB 492-2 to 6 Honors in Plant Biology
- PLB 493-1 to 4 Research topics in Plant Biology (a) Ecology, (b) Systematics, (c) Physiology/Molecular Biology.
PLB 501-4 Research Transmission Electron Microscopy (same as Science 501a, b)
- PLB 502-4 Research Scanning Electron Microscopy (same as Science 502a, b)
- PLB 504-3 Molecular Evolution and Systematics (= Zoology 500)
- PLB 517-3 Medical Botany
- PLB 524-2 Advanced Plant Genetics (= PSGA 524)
- PLB 525D-2 to 4 Cell Fractionation and Biochemistry
- PLB 530-3 Plant Ecophysiology
- PLB 533-3 Plant Growth and Morphogensis (see PSGA 520)
- PLB 545-3 Ecosystem Ecology
- PLB 546-2 Nutrient Cycling Methods
- PLB 547-3 to 8 Tropical Studies in Costa Rica
- PLB 554-1 to 4 Systematic Biology Seminar (= Anthropology 554, MBMB 554, Zoology 554)
- PLB 556-3 Phylogenetics (= Zoology 556)
- PLB 557-4 Biostatistics (= Zoology 557)
- PLB 558-4 Advanced Biostatistics (= Zoology 558)
- PLB 558-3 Advanced Biostatistics (= Zoology 558)
- PLB 570-2 to 3 Graduate Readings in Plant Biology
- PLB 571-4 Genomics of Eukaryotes (= PSAS 571)
- PLB 578-3 Population Genetics (= Zoology 578)
- PLB 580-1 to 6 Seminar
- PLB 589-1 to 12 Seminars in Plant Biology.
- PLB 590-1 to 3 Introduction to Research.
- PLB 591-2 to 9 Research
- PLB 599-2 to 9 Thesis
- PLB 600-1 to 36 Dissertation
- PLB 601-1 per semester Continuing Enrollment