Cynanchum utahense
 Cynanchum utahense is a species of flowering plant in the Cynanchum genus of the dogbane family known by the common names Utah swallow-wort and Utah vine milkweed. This relatively uncommon perennial vine is native to the Mojave Desert from California Nevada Utah and Arizona in the United States. This is a small vine with a highly branched twining stem rarely exceeding a meter in length with which it physically supports itself on other shrubs and trees.