tripal/legacy/tripal_stock/theme/templates/tripal_stock_teaser.tpl.php

<?php
$node = $variables['node'];
$stock = $variables['node']->stock;
$stock = chado_expand_var($stock, 'field', 'stock.description'); ?>

<div class="tripal_stock-teaser tripal-teaser">
    <div class="tripal-stock-teaser-title tripal-teaser-title"><?php
      print l($node->title, "node/$node->nid", ['html' => TRUE]); ?>
    </div>
    <div class="tripal-stock-teaser-text tripal-teaser-text"><?php
      print substr($stock->description, 0, 650);
      if (strlen($stock->description) > 650) {
        print "... " . l("[more]", "node/$node->nid");
      } ?>
    </div>
</div>