Roland Jefferson
... that Roland Jefferson, the first African-American botanist to work at the U.S. National Arboretum, helped preserve the famous flowering cherry trees in Washington, D.C.?
... that <b id="mwA2M"><a href="./Roland_Jefferson" id="mwA2Q" rel="mw:WikiLink" title="Roland Jefferson">Roland Jefferson</a></b>, the first African-American botanist to work at the <a href="./United_States_National_Arboretum" id="mwA2U" rel="mw:WikiLink" title="United States National Arboretum">U.S. National Arboretum</a>, helped preserve the <a href="./National_Cherry_Blossom_Festival" id="mwA2Y" rel="mw:WikiLink" title="National Cherry Blossom Festival">famous flowering cherry trees in Washington, D.C.</a>?