Science Education Resource Center at Carleton College
Serc: Identifying Plant Family Characteristics
Learners make observations of similarities and differences between three types of garden plants to determine why they are grouped together in one plant family.
US Department of Agriculture
Us Department of Agriculture: Plants Interactive Id Keys
A database of information about plants across the United States and how to identify them. Covers grasses, legumes, gymnosperms, wetland monocots, and the Ericaceae flowering plants. The information is contained in downloadable zip files,...