The late botanist Bill Greiner introduced me to the Bronx River Pathway,
a wonderful area for spring ephemerals. It is a narrow strip running
along the river between the Bronx River Parkway and the Metro North railroad.
According to Bill the best time to see the flowers is between April 17-23,
weather dependent. The flowers are found along a mostly paved path
between Crestwood & Scarsdale, NY.