The Recently Extinct Plants and Animals Database

Cryptantha hooveri I. M. Johnst.

Hoover’s cryptantha



Taxonomy & Nomenclature



Conservation Status

Last record: 1939

Extinct (Knapp et al., 2020)



Central Valley, California, USA


Biology & Ecology










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

Rejmánek, Marcel. (2018). Vascular plant extinctions in California: A critical assessment. Diversity and Distributions 24(1): 129-136.

Smith, James P. Jnr. (2018). California vascular plants: are some of them still out there? Botanical Studies 74: 1-4? [4].