Common Mosses of the Northeast and Appalachians (Princeton Field Guides)
Gathering Moss: A Natural and Cultural History of Mosses
Outstanding Mosses & Liverworts of Pennsylvania & Nearby States
Winter Tree Finder: A Manual for Identifying Deciduous Trees in Winter (Eastern US) (Nature Study Guides)
CB 7101S1 72-Pieces Blank Microscope Slides & 100-Pieces Square Cover Glass
Plant Identification Terminology: An Illustrated Glossary
Lichens of North America
How to Know the Freshwater Algae