Assessor: Sarah Schumann
According to the IUCN Red List Assessment, this subspecies is Critically Endangered as it has a small population that is threatened by habitat degradation and is at risk to illegal collection for the ornamental succulent market (Young, 2022). There are no reports of illegal collection of plants of this taxon from habitat however this species is difficult to cultivate and its wild populations are highly sought after (Young, 2022). As of 2019, this genus has become popular in trade and there is a high demand from international and domestic horticultural markets for wild collected plants as indicated by media, police reports and several online marketplace, e-commerce, and auction sites (Friedman 2021; Tshuma 2021; Trenchard 2021; Hyman 2020; Young 2020). Plants of this genus were among those targeted and confiscated during recent criminal prosecutions of illegal plant collecting (Majikela 2020; Myburgh 2021) (Confiscation Lists (2019-2021) provided by Cape Nature, SANBI Karoo Desert National Botanical Garden, SANBI Kirstenbosch Botanical Garden, SANParks Sendelingsdrift Botanic Garden and the Department of Forestry, Fisheries and the Environment). The landowner where this species is located has reported illegal plant collectors on his property and this species is known to be in demand (Young & von Staden 2020). This all suggests that this genus and species is being targeted and that this subspecies may be threatened.
Friedman, B. 2021. 24 May 2021. South Africa targeted for rare plant poaching placing biodiversity at risk. Cape Talk. Available at: https://www.capetalk.co.za/articles/417213/south-africa-targeted-for-rare-plant-poaching-placing-biodiversity-at-risk
Hyman, A. 2020. 1 February 2020. Koreans fined R5m as poachers target SA's succulent treasure chest. Times Live. Available at: https://www.timeslive.co.za/news/south-africa/2020-02-01-koreans-fined-r5m-as-poachers-target-sas-succulent-treasure-chest/
Majikela, M. 2020. 31 January 2020. Hefty sentencing for possession of Conophytum plants. Media Statement. South African Police Service Office of the Provincial Commissioner Western Cape. Available at: https://www.saps.gov.za/newsroommsspeechdetail.php?nid=24491
Myburgh, A. 2021. 20 January 2021. Man behind bars for possession of endangered plants (Conophytum). Media Statement South African Police Service, Office of the Provincial Commissioner North West. Available at: https://www.saps.gov.za/newsroom/msspeechdetail.php?nid=24491
Trenchard, T. 2021. 31 July 2021. In South Africa, Poachers Now Traffic in Tiny Succulent Plants. The New York Times. Available at: https://www.nytimes.com/2021/07/31/world/africa/south-africa-poachers-tiny-succulent-plants.html
Tshuma, N. 2021. 20 May 2021. Collectors drive a spike in theft of indigenous plants in the Western Cape. IOL. Available at: https://www.iol.co.za/capeargus/news/collectors-drive-a-spike-in-theft-of-indigenous-plants-in-the-western-cape-e120f529-741b-43a7-8454-cb8f69544878
Young, A.J. 2020. Conophytum armianum S.A.Hammer. National Assessment: Red List of South African Plants version 2020.1.
Young, A.J. & von Staden, L. 2020. Conophytum buysianum A.R.Mitch. & S.A.Hammer subsp. buysianum. National Assessment: Red List of South African Plants version 2020.1.
Young A. 2022. (assessment in prep 2022) Conophytum buysianum subsp. buysianum. The IUCN Red List of Threatened Species.
This species is highly localized with an extent of occurrence of 1 km² and two known subpopulations and an estimated population size of 1,500-2,500 mature individuals (Young & von Staden 2020; Young, 2022).
Young, A.J. & von Staden, L. 2020. Conophytum buysianum A.R.Mitch. & S.A.Hammer subsp. buysianum. National Assessment: Red List of South African Plants version 2020.1.
Young, A. 2022. (assessment in prep 2022) Conophytum buysianum subsp. buysianum. The IUCN Red List of Threatened Species.
This species has a restricted range which makes it vulnerable to population loss (Hammer 2002; Young & Desmet 2016). Regeneration potential for the vast majority of the Conophytum genus is very poor as recruitment is low and dependent on successive, appropriate weather conditions. Seeds are not known to disperse. Regeneration will take decades. (Young, personal communication 2021, 5 October)
Hammer, S. 2002. Dumpling and his wife: New view of the genus Conophytum. EAE Creative Colour, Norwich.
Young, A.J. and Desmet, P.G., 2016. The distribution of the dwarf succulent genus Conophytum NE Br.(Aizoaceae) in southern Africa. Bothalia-African Biodiversity & Conservation, 46(1), pp.1-13.