Micranthemum micranthemoides Wettst. (1891:77)
Pearl weed, Nuttall’s mudflower
Taxonomy & Nomenclature
Synonyms: Herpestis micrantha Pursh in Fl. Amer. Sept. 2: 418 (1813); Hemianthus micranthemoides Nutt. in J. Acad. Nat. Sci. Philadelphia 1: 119 (1817); Herpestis micrantha Elliott in Sketch Bot. S. Carolina 2: 105 (1822), nom. illeg.; Micranthemum micrantha (Pursh) Alph.Wood in Class-book Bot.: 525 (1861); Micranthemum nuttallii A.Gray in Manual, ed. 5: 331 (1867); Globifera micranthemoides Kuntze in Revis. Gen. Pl. 2: 461 (1891); Hemianthus micranthus (Pursh) Pennell in Torreya 19: 150 (1919)
Conservation Status
Extinct (Knapp et al., 2021; Abeli et al., 2022b) or Extinct in the Wild (Christenhusz & Govaerts, 2024; POWO, 2024)
Last (wild) record: 1941 (Knapp et al., 2021 [global]; Christenhusz & Govaerts, 2024 [wild])
Distribution
District of Columbia (=Washington, D.C.), Delaware, Maryland, New Jersey, New York, Pennsylvania & Virginia, USA
Biology & Ecology
Hypodigm
Media
References
Abeli, Thomas, Sharrock, Suzanne and Albani Rocchetti, Giulia. (2022a). Out-of-date datasets hamper conservation of species close to extinction. ResearchSquare preprint. https://doi.org/10.21203/rs.3.rs-1250892/v1
Abeli, Thomas, Sharrock, Suzanne and Albani Rocchetti, Giulia. (2022b). Out-of-date datasets hamper conservation of species close to extinction. Nature Plants 8: 1370-1373. https://doi.org/10.1038/s41477-022-01293-w
Christenhusz, Maarten J. M. and Govaerts, Rafaël. (2023). Uitgestorven. Op plantenjacht rond de wereld: 1-511. Sterck & De Vreese.
Christenhusz, Maarten J. M. and Govaerts, Rafaël. (2024). Plant extinction in the Anthropocene. Botanical Journal of the Linnean Society. https://doi.org/10.1093/botlinnean/boae045 [Appendix S1]
Gleason, H. A. (1958). The New Britton and Brown Illustrated Flora of the Northeastern United States and Adjacent Canada. Vol 1-3.
Gleason, H. A., and Cronquist, A. (1991). Manual of vascular plants of northeastern United States and adjacent Canada, second edition. New York Botanical Garden, Bronx, NY.
Keener, B. (2019). Micranthemum, pp. 358-359. In: Flora of North America North of Mexico 17: 1-737. Oxford University Press, New York, Oxford.
Knapp, Wesley M., Frances, Anne, Noss, Reed, Naczi, Robert F. C., Weakley, Alan, Gann, George D., Baldwin, Bruce G., Miller, James, McIntyre, Patrick, Mishler, Brent D., Moore, Gerry, Olmstead, Richard G., Strong, Anna, Kennedy, Kathryn, Heidel, Bonnie and Gluesenkamp, Daniel. (2021). Vascular plant extinction in the continental United States and Canada. Conservation Biology 35(1): 360-368. https://doi.org/10.1111/cobi.13621 [Supporting Information (Appendix S1)]
Knapp, Wesley M. and Naczi, R. F. C. (2021). Vascular plants of Maryland, USA. A comprehensive account of the state's botanical diversity. Smithsonian Contributions to Botany 113: 1-151.
POWO. (2024). Plants of the World Online (online resource). Facilitated by the Royal Botanic Gardens, Kew, United Kingdom. Available at: https://powo.science.kew.org/ [Accessed 19 August 2024]
Rhoads, A. F., and Block, T. A. (2007). The plants of Pennsylvania: an illustrated manual. Second edition. Univ. of Pennsylvania Press, Philadelphia. 1042 pp.
Tatnall, R. R. (1946). Flora of Delaware and the Eastern Shore. Soc. Nat. Hist. Delaware, Lancaster, Pennsylvania.
Walter, Kerry S. and Gillett, Harriet J. (eds.). (1998). 1997 IUCN Red List of Threatened Plants. Compiled by the World Conservation Monitoring Centre. Gland, Switzerland & Cambridge, UK: IUCN – The World Conservation Union. lxiv + 862 pp.
Werier, D. (2017). Catalogue of the Vascular plants of New York state. Memoirs of the Torrey Botanical Club 27: 1-542.