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Tylecodon occultans

Assessor: Sarah Schumann

Sensitive in 2010
No
Family
Crassulaceae
Reason for the sensitivity status
This taxon is sensitive as it has a small population size and is not known to be threatened by illegal collection of wild individuals but there is evidence that this genus is being targeted and exploited for horticultural trade with individuals from several species being illegally removed. Were exploitation to take place, recruitment and recovery may be poor due to its small population size. Releasing data on this species can exacerbate threat and vulnerability.
This species is either similar to another sensitive species or belongs to a group containing sensitive species, and is extremely rare in the wild. The localities of wild populations need to be protected to avoid loss to exploitation, which, due to its rarity, could drive the species to extinction within a very short time.
Exploitation extent
Uncertain - No data exists yet showing that this species is exploited in the wild, however it has one or more relatives or look-alike species (found in South Africa or globally) that are known to be utilised. This species has a similar life form or other relevant traits to its exploited relative(s), making it highly likely that it would be exploited for the same purposes.
Justification and references

According to the SANBI Red List Assessment, this species is Rare as it is known from only a few records and is not thought to be threatened (von Staden, 2015). This genus is currently in demand and of popular interest in international horticultural trade, as indicated by several online marketplace, e-commerce and auction sites. Plants of this genus are known to be utilized and were among those targeted and confiscated during illegal plant collecting (Confiscation Lists (2020-2021) provided by Cape Nature, SANBI Kirstenbosch Botanical Garden, SANBI Karoo Desert Botanic Garden, SANParks Sendelingsdrift Botanic Garden and Department of Forestry, Fisheries and the Environment). This taxon is though to be highly collectable (Helme, N, personal communication 2022, 25 January). This suggests that this genus may be targeted and that rare species may be at risk to over-exploitation and removal from the wild.

von Staden, L. 2015. Tylecodon occultans (Toelken) Toelken. National Assessment: Red List of South African Plants version 2020.1. 

Population vulnerability
Population is vulnerable: size is <= 2500 mature individuals OR the number of known subpopulations is <= 5 OR range is <= 100km2 OR species at risk of localised extinctions
Justification and references

This taxon has an extent of occurrence of 819 km², is a localized habitat specialist and is so small in size that it is easily overlooked (von Staden, 2015). It is thought that less than 1000 individuals occur in the wild (Helme, N, personal communication 2022, 25 January).

von Staden, L. 2015. Tylecodon occultans (Toelken) Toelken. National Assessment: Red List of South African Plants version 2020.1. 

Targeted demographics
Unknown.
Regeneration potential
This species has a slow population growth rate, or the growth rate varies depending on habitat, and there is a poor chance the wild populations will recover from exploitation OR a collector might feasibly harvest the entire extant population removing the chance of subsequent recruitment.
Justification and references

This taxon has a small population size, is slow growing nature and vulnerable to collection (Helme, N, personal communication 2022, 25 January).

 

Reference file
Tylecodon occultans Threatened Species Programme _ SANBI Red List of South African Plants.pdf543.38 KB
tylecodon _ eBay.pdf898.51 KB
Tylecodon Aucfan.pdf1.17 MB