Davidse - 39131 - United States
Euphorbia serpens
Fortunato - 13134 - Argentina
Gregg - 214 - Mexico
Gregg - 457a - Mexico
Lindheimer - 693 - United States
Parada-Gutierrez - 4158 - Bolivia
Stevens - 31023 - Paraguay
Stevens - 34160 - Chile
Van Brunt - 2014-44 - United States
Yatskievych - 98-117 - United States