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  • Cistanthe umbellata
    Contr. Knowl. 6(2): 4, plate 1. 1853 Synonyms: Calyptridium umbellatum (Torrey) Greene Calyptridiumu umbellatum var. caudiciferum (A. Gray) Jepson Spraguea
    3 KB (206 words) - 20:37, 7 December 2022
  • Cistanthe
    Systematics of the Calyptridium umbellatum complex (Portulacaceae). Brittonia 27: 197–208. Wilken, D. H. and W. A. Kelley. 1993. Calyptridium. In: J. C. Hickman
    7 KB (549 words) - 22:01, 5 November 2020