Wolffia arrhiza
... that Wolffia arrhiza is the smallest vascular plant on earth?
... that <i id="mwE6c"><b id="mwE6g"><a href="./Wolffia_arrhiza" id="mwE6k" rel="mw:WikiLink" title="Wolffia arrhiza">Wolffia arrhiza</a></b></i> <i id="mwE6o">(pictured)</i> is the smallest <a href="./Vascular_plant" id="mwE6s" rel="mw:WikiLink" title="Vascular plant">vascular plant</a> on earth?