ily of
vascular plants at
<a href="https://powo.science.kew.org/" class="external-link">Plants of the World Online (POWO)</a>.</p>
    </div>

    <div class="section level2">
    <h2 id="ref-usage">Usage<a class="anchor" aria-label="anchor" href="#ref-usage"></a></h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">powoSpecies</span><span class="op">(</span><span class="va">family</span>,</span>
<span>            genus <span class="op">=</span> <span class="cn">NULL</span