2: Common thistle (Crestwood Riverside, Apr 14, 2001)

3: Common thistle. Tap root is edible. (Crestwood Riverside, Apr 14, 2001)

4: Thistle. Root tastes like potato. (Prospect Park, Apr 22, 2001)

1: Thistle. Edible root, but now out of season. (Alley Pond Park (Woods), May 14, 2000)