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​Extension Lakes Bookstore

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Features include:
      • Over 570 color photographs
      • Botanical keys to bur-reeds, bladderworts, watermilfoils, pondweeds, pond lillies,
        naiads, and stoneworts
      • Three practice pages

Aquatic Plants of The Upper Midwest

A photographic field guide to our underwater forests

4th Edition

by Paul M. Skawinski


Over 570 high-resolution, color photographs fill this easy-to-use field guide. Beginners to the world of aquatic plants will enjoy the easy descriptions and abundant photographs, while more advanced biologists will appreciate the comprehensive treatments, dichotomous keys, and other resources. It covers 164 species in total, including both native and non-native species, over 20 species of macro-algae (Chara, Nitella, etc.), and an appendix of non-native species in nearby states that are threatening to invade our region in the future.

The 4th Edition contains two updated keys, new photographs, and updated scientific names. It features a new, slim design for easy packing. Spiral-bound with laminated covers for utility in the field.

Single Copy: $45  (handling included)
Sample pages:    
Perfoliate pondweed (Potamogeton perfoliatus) and White-stem pondweed (Potamogeton praelongus)
Leafy stonewort (Chara foliolosa) and globular stonewort (Chara globularis)
Pygmy white water lily (Nymphaea leibergii) and white water lily (Nymphaea odorata)


“If you can’t take a botanist to the lake – take this book! It is a comprehensive guide to the submerged, free-floating, and floating-leaved plants of freshwater lakes and wetlands in our region. For each species, Paul matches his professional photographs with key identification tips and habitat information. Dichotomous keys are provided for major plant groups and easy to follow instructions guide you through the identification process. This guide uniquely includes current information on macroalgae in the Characeae family as well as less common and rare species not found in other guides. The 4th edition has retained the well-designed spiral notebook feature with improvements to the waterproof paper quality. This book opens the hatch to the underwater floral diversity of our lakes. Put a copy on your lake cabin coffee table and in your boat. Then dive in see how many different plants you can find in your favorite lake!"

- Donna Perleberg
Aquatic Plant Ecologist, Minnesota Department of Natural Resources

“The definitive photographic guide to the often daunting world of aquatic plants."

- Ryan O'Connor 
Ecologist, Wisconsin Department of Natural Resources

“This book is an essential botanical reference for anyone interested in Midwestern plants; it is absolutely essential for anyone interested in the identification of aquatic macrophytes, far exceeding in clarity of presentation and photography any published North American aquatic plant guide."

- Dr. Emmet Judziewicz

Professor Emeritus of Plant Taxonomy, UW - Stevens Point; Author of Wildflowers of Wisconsin and the Great Lakes Region    

"When you open up the book, the most striking thing about it is the stunning photographs. Skawinski has mastered the very difficult skill of underwater photography, producing amazingly clear and full color images of most of the species in their actual habitat underwater. Many taxa also include fresh specimens on a white background, close-ups of flower and seeds, leaves, and more, and all include a nickel for scale. The photos and morphological keys make identifying aquatic plants a breeze."

"...jam-packed with everything you need to identify submergent aquatic plants in Minnesota, Wisconsin and Michigan."

- James P. Bennett, Department of Botany, University of Wisconsin - Madison

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