1: Sow thistle. Only edible in March. (Central Park, Mar 19, 2000)

2: Sow thistle. In dandelion family. (Central Park, Jul 2, 2000)

3: Common sow thistle. (Inwood Park, Jul 17, 2011)

4: Common sow thistle. (Inwood Park, Jul 17, 2011)