Boechera fructicosa (A. Nelson) Al-Shehbaz



Taxonomy & Nomenclature

Synonym/s: Arabis fructicosa A.Nelson, Bot. Gaz. 30: 190. 1900


Taxonomic validity unclear. Considered rediscovered by (Humphreys et al., 2019), however the authority they cite ( lists the taxon under "[Boechera microphylla? Hybrid?]".


Conservation Status

Extinct (Knapp et al., 2020)

Last record: 1899



near Undine Falls (Yellowstone National Park), Park County, Wyoming (& Minnesota?)


Biology & Ecology










Abeli, Thomas, Sharrock, Suzanne and Rocchetti, Giulia Albani. (2022). Out-of-date datasets hamper conservation of species close to extinction. ResearchSquare preprint.

Ayensu, E.S. & Defilipps, R.A. (1978). Endangered and Threatened Plants of the United States: 1-403. Smithsonian Institution.

Humphreys, Aelys M. (2019). Global dataset shows geography and life form predict modern plant extinction and rediscovery. Nature Ecology & Evolution 3: 1043-1047. [Abstract] [Supplementary Dataset 1]

Knapp, Wesley M. et al. (2020). Vascular plant extinction in the continental United States and Canada. Conservation Biology. doi:


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