Phyllostegia kahiliensis H.St.John
Taxonomy & Nomenclature
Conservation Status
Missing (Clark, 2015; Wood et al., 2019:11) or Extinct (Wagner et al., 2026:41)
Last record: 1987 (Clark, 2015; Wood et al., 2019:11)
IUCN RedList status: Critically Endangered (Possibly Extinct)
Distribution & Habitat
Mt. Kahili, Kaua'i, Hawaiian Islands, USA
Biology & Ecology
Hypodigm
Media
References
Clark, M. (2015). Phyllostegia kahiliensis. The IUCN Red List of Threatened Species 2015: e.T80232109A80232114. https://dx.doi.org/10.2305/IUCN.UK.2015-4.RLTS.T80232109A80232114.en. Downloaded on 28 December 2015.
Fräßdorf, Doreen. (n.d.). Liste ausgestorbener Pflanzen der Neuzeit / List of extinct plants in modern times. Available at: https://www.artensterben.de/liste-ausgestorbener-pflanzen/ [Accessed 27 September 2026]
Wagner, Warren L. (1999). Nomenclator and Review of Hawaiian Phyllostegia (Lamiaceae). Novon 9: 265-279.
Wagner, Warren L., Bruegmann, Marie M., Herbst, Derral M. and Lau, Joel Q. C. (1999). Hawaiian Vascular Plants at Risk: 1999. Bishop Museum Occasional Papers 60: 1-58.
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
Wood, K.R. 2015. Delissea rhytidosperma H. Mann (Campanulaceae) and Phyllostegia kahiliensis H. St. John (Lamiaceae) possibly extinct on Kaua‘i, Hawaiian Islands. Bishop Museum Occasional Papers 116(15): 31-33.
Wood, Kenneth R., Oppenheimer, Hank and Keir, Matthew. (2019). A checklist of endemic Hawaiian vascular plant taxa that are considered possibly extinct in the wild. National Tropical Botanical Garden, Technical Report #314.