Found in the Vining backyard near a sink-hole. What symmetry! It appears to be Golden Ragwort [Packera aurea], from the Aster (Asteraceae) family. According to the USDA, it blooms in March-April.
USDA Plants Listing:Packera aurea
Golden Ragwort – 11 April 2013
Golden Ragwort (more) – 11 April 2013
Golden Ragwort (side) – 14 April 2015
