Charles Edward Hubbard
... that British botanist Charles Edward Hubbard was "the world authority on the classification and recognition of grasses"?
... that <a href="./United_Kingdom" id="mwCBw" rel="mw:WikiLink" title="United Kingdom">British</a> <a href="./Botany" id="mwCB0" rel="mw:WikiLink" title="Botany">botanist</a> <b id="mwCB4"><a href="./Charles_Edward_Hubbard" id="mwCB8" rel="mw:WikiLink" title="Charles Edward Hubbard">Charles Edward Hubbard</a></b> was "the world authority on the <a class="mw-redirect" href="./Biological_classification" id="mwCCA" rel="mw:WikiLink" title="Biological classification">classification</a> and recognition of <a class="mw-redirect" href="./Grass" id="mwCCE" rel="mw:WikiLink" title="Grass">grasses</a>"?