A specimen kept in Leiden (L1693369) and probably seen by Persoon, containing both Sesuvium portulacastrum subsp. portulacastrum (right) and S. portulacastrum subsp. persoonii (left) from different locations (America and West Africa, respectively).

 
 
  Part of: Sukhorukov AP, Nilova MV, Erst AS, Kushunina M, Baider C, Verloove F, Salas-Pascual M, Belyaeva IV, Krinitsina AA, Bruyns PV, Klak C (2018) Diagnostics, taxonomy, nomenclature and distribution of perennial Sesuvium (Aizoaceae) in Africa. PhytoKeys 92: 45-88. https://doi.org/10.3897/phytokeys.92.22205