Sicyos semitonsus H.St.John (1970:453)
Wild bur-cucumber, Laysan bur cucumber
Taxonomy & Nomenclature
Synonym/s: Cladocarpa semitonsa (H.St.John) H.St.John in Bot. Jahrb. Syst. 99: 491 (1978)
Conservation Status
Missing (NatureServe, 2026)
Last (and only) record: 1964 (NatureServe, 2026)
Distribution & Habitat
Laysan, Hawaiian Islands, USA
POWO (2026) states Lanai but this is presumably in error.
Anatomy & Morphology
Biology & Ecology
Hypodigm
Media
References
Kartesz, J. T. (1994). A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
NatureServe. (2026). Sicyos semitonsus: Wild Bur-cucumber. NatureServe Network Biodiversity Location Data accessed through NatureServe Explorer [web application]. NatureServe, Arlington, Virginia. Available at: https://explorer.natureserve.org/ [Accessed on 19 August 2026]
POWO. (2026). 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 2026]
Wagner, Warren L., Herbst, D. R. and Sohmer, S. H. (1999). Manual of the Flowering Plants of Hawaiʹi, revised edition. Honolulu, HI: University of Hawaii Press and Bishop Museum Press. 1853 pp.
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