Calyptridium umbellatum (Torr.) Greene
Publication: Bull. Torrey Bot. Club 13: 144. 1886.
Calyptridium umbellatum (Torr.) Greene var. caudiciferum (A. Gray) Jeps. [VPBC4, JPM]
Calyptridium umbellatum (Torr.) Greene var. umbellatum
Cistanthe umbellata (Torr.) Hershk. [FNA4]
Cistanthe umbellata (Torr.) Hershk. var. caudicifera (A. Gray) Kartesz & Gandhi [KZ99]
Cistanthe umbellata (Torr.) Hershk. var. umbellata [KZ99]
Spraguea umbellata Torr. [HC]
Spraguea umbellata Torr. var. caudicifera A. Gray [HC]
Spraguea umbellata Torr. var. umbellata [HC]