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Cryptocarya angustifolia

Assessor: Sarah Schumann

Sensitive in 2010
No
Family
Lauraceae
Reason for the sensitivity status
Other species of this genus are threatened with bark harvesting for medicinal purposes and have been recorded at medicinal markets. Small and scattered subpopulations makes this species vulnerable to population loss. Were exploitation to occur, recruitment and recovery may be poor. Releasing data on this species could 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 widespread but a localized habitat specialist that is not thought to be threatened (von Staden, 2015). Other species of this genus are threatened with bark harvesting for medicinal purposes and have been recorded at medicinal markets (Williams et al. 2016; Williams et al. 2008; Cunningham, 1998; Williams, 2007). This suggests that this genus may be targeted and that rare species may be at risk to over-collection and removal from the wild.

Cunningham, A.B. 1988. An investigation of the herbal medicine trade in Natal/KwaZulu. Investigational Report No. 29. Institute of Natural Resources, Pietermaritzburg.

von Staden, L. 2015. Cryptocarya angustifolia E.Mey. ex Meisn. National Assessment: Red List of South African Plants version 2020.1.

Williams, V.L. 2007. The design of a risk assessment model to determine the impact of the herbal medicine trade on the Witwatersrand on resources of indigenous plant species. Unpublished PhD Thesis, University of the Witwatersrand, Johannesburg.

Williams, V.L., Raimondo, D., Dold, A.P., Crouch, N.R., Cunningham, A.B., Scott-Shaw, C.R., Lötter, M. & Ngwenya, A.M. 2008. Cryptocarya myrtifolia Stapf. National Assessment: Red List of South African Plants version 2020.1. 

Williams, V.L., Raimondo, D., Crouch, N.R., Cunningham, A.B., Scott-Shaw, C.R., Lötter, M. & Ngwenya, A.M. 2016. Cryptocarya latifolia Sond. 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 occurs in small and scattered subpopulations (von Staden, 2015).

von Staden, L. 2015. Cryptocarya angustifolia E.Mey. ex Meisn. 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

Rarity and small, scattered subpopulations makes this species vulnerable to population loss, were exploitation to take place.

Reference file
Cryptocarya angustifolia Threatened Species Programme _ SANBI Red List of South African Plants.pdf540.81 KB