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Dioscorea stipulosa

Assessor: Sarah Schumann

Sensitive in 2010
No
Family
Dioscoreacea
Reason for the sensitivity status
This genus is in demand and of popular interest in international horticultural trade. Other species of this genus are known to be harvested and utilized in local medicinal plant trade and horticultural trade. As this taxon does not have a vulnerable population size and it is not thought to be threatened, were exploitation to occur, recruitment and recovery may be possible.
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 range restricted but locally common and not threatened (Dold & von Staden, 2010). 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.

Dold, A.P. & von Staden, L. 2010. Dioscorea stipulosa Uline ex R.Knuth. National Assessment: Red List of South African Plants version 2020.1.

 

Population vulnerability
Population is not vulnerable: size is > 2500 mature individuals, AND the number of known subpopulations is > 5 AND range > 100km2
Justification and references

This taxon has an extent of occurrence of 333 km² and is thought to be locally common (Dold & von Staden, 2010).

Dold, A.P. & von Staden, L. 2010. Dioscorea stipulosa Uline ex R.Knuth. National Assessment: Red List of South African Plants version 2020.1.

Targeted demographics
Unknown.
Regeneration potential
This species has a fast population growth rate, and there is a good chance the wild populations will recover from exploitation.
Justification and references

As this taxon does not have a vulnerable population size and it is not thought to be threatened, were exploitation to occur, recruitment and recovery may be possible.

Reference file
Dioscorea stipulosa Threatened Species Programme _ SANBI Red List of South African Plants.pdf541.9 KB
dioscorea _ eBay.pdf1.04 MB
Dioscorea Aucfan.pdf963.94 KB
Dioscorea Rakuten.pdf507.95 KB