An Aquatic Plant Identification Manual for Washington's Freshwater Plants


Whorled leaf arrangerment

Whorls: A ring of three or more similar structures radiating from a common point. The plant illustrated above has a whorled leaf arrangement. See also alternate and opposite

Illustration from Aquatic Plant Identification and Herbicide Use Guide, Technical Report A-88-9. U.S. Army Corps of Engineers Waterways Experiment Station. Used with permission

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