A Sure Sign of Autumn's Approach

The recent rain has been a very welcome change in the weather. The first major cool front of the season is forecast to arrive just in time for the first day of Autumn on Sunday. One of the best indicators that Fall is fast approaching are the beautiful yellow flowers beginning to open on the Lindheimer's Senna:

This set of photos was taken along the Panther Spring Creek trail at Walker Ranch Historic Landmark Natural Area on Wednesday, September 11, 2013.