Darwin family repeat flower count

The descendants of Charles Darwin are retracing his footsteps by surveying wild flowers in the meadows around his former home at Down House, in Kent. In June 1855, Darwin began a study of the local plants, which supported his theories on evolution and was mentioned in his book On the Origin of Species. Now, three generations of the Darwin family - aged from 21 months to 78 years - have begun a repeat survey. It should show how flowering plants have changed over the past 150 years.