If you wait long enough mysteries reveal themselves.

In April 2012 I displayed this photo of squawroot and asked readers the identity of the green leaf on the left side of the picture.  I thought it might be an invasive species.

Mark Bowers and Loree Speedy answered it was probably White wood aster (Eurybia divaricata) which grows in large patches and therefore might look invasive, though it’s not.

Last week I finally put the lonely leaf and its flower together when I found the asters blooming in the same place where the leaves appear in the spring.

And yes it was in patches, small and large.  Small above, large below, in Schenley Park.

Mystery solved.   …Unless I was fooled again.

(photos by Kate St. John)