slender knotweed
... that the slender knotweed is eaten by people in Africa in times of famine?
... that the <b id="mwCcE"><a href="./Persicaria_decipiens" id="mwCcI" rel="mw:WikiLink" title="Persicaria decipiens">slender knotweed</a></b> is eaten by people in Africa in times of famine?