Most Compositae (Asteraceae) are descendants of a paleohexaploid and all share a paleotetraploid ancestor with the Calyceraceae
Michael Barker, Zheng Li, Thomas Kidder, Chris Reardon, Zhao Lai, Luiz Oliveira, Moira Scascitelli, Loren Rieseberg
The paper identifies a shared paleotetraploid ancestor between Compositae and Calyceraceae and finds most Compositae descended from a paleohexaploid.
bioRxiv · May 6, 2016Evolutionary Biology