An exploration of non-vascular plants and the important niches they occupy, particularly in aquatic or moist environments and in relation to human health. The course covers algae, fungi, lichens, and bryophytes including classification, development, physiology, and ecology. Applied aspects include productivity of freshwater and marine systems, commercial uses, mushroom culture, plant pathology and environmental and human health. Firsthand experience of the organisms includes local field trips and laboratory studies. Recent discoveries in plant biology are highlighted through the completion of a literature review.