Banksia elegans
... that over 99% of the flower heads of the shrub Banksia elegans set no seed?
... that over 99% of the flower heads of the shrub <i id="mwAXM"><b id="mwAXQ"><a href="./Banksia_elegans" id="mwAXU" rel="mw:WikiLink" title="Banksia elegans">Banksia elegans</a></b></i> <i id="mwAXY">(pictured)</i> set no seed?