Metastelma mexicanum (Brandegee) Fishbein & R.A. Levin
      
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2 664037 Metastelma mexicanum (Brandegee) Fishbein & R.A. Levin [80 655267 Melinia mexicana Brandegee] Asclepiadaceae
Ann. Missouri Bot. Gard., vol. 91 : p. 62, fig. 16 (2004) [J. Conrad]