Watercress
(Nasturtium)
Nasturtium officinaleBrassicaceae — Mustard family
Non-native
White Clay Creek State Park -- Thompson Station Road
May 2004
White Clay Creek State Park -- Possum Hill
May 2014
White Clay Creek State Park -- Possum Hill
June 2014
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Photos copyright David G. Smith
Information from the Delaware Flora Checklist used with author's permission.