tripal/tripal_library/theme/templates/tripal_library_teaser.tpl.php

<?php
$node    = $variables['node'];
$library = $variables['node']->library;

// get the library description. IT uses a tern name of 'Library Description'
$libprop = tripal_library_get_property($library->library_id, 'Library Description');
$description = $libprop->value; ?>

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