Schiedea haakoaensis W.L.Wagner, Weller & A.K.Sakai (2022)
Taxonomy & Nomenclature
Synonym/s: Schiedea sp. nov. 'Laupāhoehoe'
Conservation Status
Possibly Extinct in the Wild (Shay, 2025) or Extinct in the Wild (PEPP, 2024; Wagner et al., 2026:28)
Last wild record: September 2016 (Shay, 2025); July 2017 (Wagner et al., 2022); 2019
IUCN RedList status: Critically Endangered (Possibly Extinct in the Wild)
"New Schiedea species
An entirely new species of native plant was found by State of Hawai‘i DOFAW staff near Lāupahoehoe. A single plant of an unfamiliar species was first observed in 2019. When botanists returned to the site, the plant was gone. Soil was collected and a few months later, young seedlings of the unknown species emerged and began to grow. These new plants are members of the endemic Hawaiian genus, Schiedea, in the carnation family, and a new name for this rare species will be announced in 2022."
Distribution & Habitat
near Laupāhoehoe, Hawaiʻi (=Big Island), Hawaiian Islands, USA
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
Wagner, W. L., Weller, S. G., Sakai, A. K., DeMent, T. and VanDeMark, J. (2022). Schiedea haakoaensis, a new facultatively autogamous species of Schiedea sect. Mononeura (Caryophyllaceae) from the Hawaiian Islands. PhytoKeys 210: 135-141. https://doi.org/10.3897/phytokeys.210.91226
Other references:
Shay, K. (2025). Schiedea haakoaensis. The IUCN Red List of Threatened Species 2025: e.T225509716A236612621. https://dx.doi.org/10.2305/IUCN.UK.2025-2.RLTS.T225509716A236612621.en. Accessed on 06 August 2026.
Wagner, Warren L., Khan, Nancy R., Lorence, David H., Flynn, Timothy W. and Wood, Kenneth R. (2026). Checklist of native and naturalized Hawaiian vascular plants. Smithsonian Contributions to Botany 123: i-xii + 1-96, 3 tables. https://doi.org/10.5479/si.32124043