Calyptridium

Calyptridium is a genus of flowering plants belonging to the family Montiaceae.

Its native range is Northern America, Southern South America.

Species:
 * Calyptridium hesseae (J.H.Thomas) Hershk., syn. Calyptridium parryi var. hesseae J.H.Thomas
 * Calyptridium martirense (Guilliams, M.G.Simpson & Rebman) Hershk.
 * Calyptridium monandrum Nutt.
 * Calyptridium monospermum Greene
 * Calyptridium nevadense (J.T.Howell) Hershk.
 * Calyptridium parryi A.Gray, including Calyptridium arizonicum (J.T.Howell) M.G.Simpson, M.Silveira & Guilliams, syn. Calyptridium parryi var. arizonicum
 * Calyptridium pulchellum (Eastw.) Hoover
 * Calyptridium pygmaeum Parish ex Rydb.
 * Calyptridium quadripetalum S.Watson
 * Calyptridium roseum S.Watson
 * Calyptridium umbellatum (Torr.) Greene