Taxonomic status: Synonym

homotypic synonyms:
Calyptridium umbellatum (Torrey) Greene; Cistanthe umbellata (Torrey) Hershkovitz;

protologue: Smithsonian Contr. Knowl. 6: 4 (1854)
URL protologue: https://archive.org/stream/smithsoniancontr61854smit#page/4/mode/2up

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