<i>Phlox drummondii</i> illustration
S. Curtis
1835
<p><a href="//commons.wikimedia.org/wiki/Category:Curtis%27s_Botanical_Magazine" title="Category:Curtis's Botanical Magazine"><i>"Curtis's Botanical Magazine"</i></a>  vol. 62 (N.S. 9) tab. 3441 <br></p>
<a rel="nofollow" class="external text" href="http://www.lib.utexas.edu/books/landscapes/publications/txu-oclc-1032906/fullview.html">The vegetation of Texas</a> and (<a rel="nofollow" class="external free" href="http://botanicus.org/page/466073">http://botanicus.org/page/466073</a>)