Donnellsmithia juncea (Humb. & Bonpl. ex Spreng.) Mathias & Constance var. juncea Donnellsmithia juncea (Humb. & Bonpl. ex Spreng.) Mathias & Constance var. juncea in Contr. Univ. Michigan Herb. 11: 4. 1973 sec. Espejo-Serna & López-Ferrari 2011