Hydrocharitaceae - frogbit family

Gerald A. Mulligan
Research Scientist and Research Institute Director (retired) and presently Honorary Research Associate, Agriculture and Agri-Food Canada,
Ottawa, Ontario K1A 0C6, Canada

Awarded the George Lawson Medal by the Canadian Botanical Association in 2006.
Awarded the Faculty of Macdonald, McGill University, Most Distinguished Alumni Award on October 18, 2014.
Read his biography "The Real Weed Man" available in print and ebook.

Hydrocharis morsus-ranae L.,European frogbit, hydrocharide grenouillette
Perennial; spreading by seeds and vegetative buds and fragments; flowers white (with yellow centre); common in southern Quebec and Ontario; stems to 6 feet (20 dm) long; floating aquatic in still and slowly moving water of bays, ponds, rivers, streams, marshes and ditches; introduced from Europe and is rapidly increasing in range in North America.
Text and photos of European frogbit by Stephen J. Darbyshire

Click on a photo to view an enlarged image.
Weed Name Photo Weed Name Photo
European frogbit, hydrocharide grenouillette
(plants)
European frogbit, hydrocharide grenouillette
(flower)
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