Polystemma is a genus of flowering plants of the family Apocynaceae first established as a genus in 1844. It is native to Mexico and Central America.

Species

As of November 2023[update], Plants of the World Online accepted the following species:

  • Polystemma canisferum McDonnell & Fishbein
  • Polystemma cordatum (Brandegee) L.O.Alvarado
  • Polystemma cordifolium (A.Gray) McDonnell & Fishbein
  • Polystemma fishbeiniana V.W.Steinm. & W.D.Stevens
  • Polystemma guatemalense (Schltr.) W.D.Stevens
  • Polystemma mirandae Lozada-Pérez
  • Polystemma scopulorum Brandegee