Virginia spiraea
... that the Virginia spiraea may have become extinct in Pennsylvania due to damming of the Yough?
... that the <b id="mwC8o"><a href="./Spiraea_virginiana" id="mwC8s" rel="mw:WikiLink" title="Spiraea virginiana">Virginia spiraea</a></b> may have become <a href="./Local_extinction" id="mwC8w" rel="mw:WikiLink" title="Local extinction">extinct in Pennsylvania</a> due to damming of the <a href="./Youghiogheny_River" id="mwC80" rel="mw:WikiLink" title="Youghiogheny River">Yough</a>?