main id="main" class="col-md-9"><div class="page-header">
      <img src="" class="logo" alt=""><h1>Ritchie et al. (1987)</h1>
      
      <div class="d-none name"><code>ritchie_1987.Rd</code></div>
    </div>

    <div class="ref-description section level2">
    <p>Allometric models from Ritchie et al. (1987)</p>
    </div>


    <div class="section level2">
    <h2 id="crown-ratio-models">Crown Ratio Models<a class="anchor" aria-label="anchor" href="#crown-ratio-models"></a></h2>
    <p><code>rc = 1 - ((