upright bugle
... that the upright bugle often interbreeds with its more widespread cousin, the common bugle, producing hybrid offspring?
... that the <b id="mwFt0"><a href="./Ajuga_genevensis" id="mwFt4" rel="mw:WikiLink" title="Ajuga genevensis">upright bugle</a></b> often interbreeds with its more widespread cousin, the <a href="./Ajuga_reptans" id="mwFt8" rel="mw:WikiLink" title="Ajuga reptans">common bugle</a>, producing <a href="./Hybrid_(biology)" id="mwFuA" rel="mw:WikiLink" title="Hybrid (biology)">hybrid offspring</a>?