Common arrowhead Sagittaria latifolia Location: Kenilworth Aquatic Gardens, Washington, DC Year: 2008 Merckdigitals catalogue number: 05-51779 Comments:

Common arrowhead Sagittaria latifolia Location: Kenilworth Aquatic Gardens, Washington, DC Year: 2009 Merckdigitals catalogue number: 05-72270 Comments:

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