Trigonostemon hartleyi Airy Shaw
Taxonomy & Nomenclature
Conservation Status
Missing (Jimbo & Barstow, 2020)
Last record: 1963 (Jimbo & Barstow, 2020)
IUCN RedList status: Critically Endangered (Possibly Extinct)
Distribution & Habitat
Papua New Guinea
Biology & Ecology
Hypodigm
Media
References
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]
Graner, Torun. (2026). A World Without Trees: An Analysis of Global Tree Extinction Rates, Geographical Distribution and Correlation to Socioeconomic Factors. Master’s Dissertation, School of Natural Sciences, Technology and Environmental Studies, Södertörn University. 41 pp.
Jimbo, T. and Barstow, M. (2020). Trigonostemon hartleyi. The IUCN Red List of Threatened Species 2020: e.T143385908A143765484. https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T143385908A143765484.en. Accessed on 08 July 2022.
Yu, R.-Y and van Welzen, P. C. (2018). A taxonomic revision of Trigonostemon (Euphorbiaceae) in Malesia. Blumea 62(3): 179-229.