Aquatic and Wetland Plant Terms: University of Florida indexed glossary of aquatic, wetland and invasive plants.
Botanical Glossary: Glossary of botanical terms, prefixes and suffixes.
Botanical Terms: Glossary of botanical terms used to describe the physical attributes of plants.
Forest and Range Soils: Downloadable glossaries of soils and soil terminology.
Forest Genetics: Glossary of terms used in forest genetics as well as those applicable to the general study of organisms.
GardenWeb Glossary of Botanical Terms: Regularly updated glossary of more than 4400 terms relating to botany, gardening, horticulture and landscape architecture.
Lichen Glossary: Terms likely to be used in the volumes of the "Flora of Australia" dealing with the lichens.