Template:Hershkovitz, 1993a
- Hershkovitz, M.A. 1993. Revised circumscriptions and subgeneric taxonomies of Calandrinia and Montiopsis (Portulacaceae) with notes on phylogeny of the portulacaceous alliance. Annals of the Missouri Botanical Garden 80(2): 333-365. DOI: 10.2307/2399789