Gasteria batesiana var. dolomitica | SANBI Sensitive Species

Assessor: Sarah Schumann

Sensitive in 2010

Family

Asphodelaceae

Reason for the sensitivity status

This variety is known to be utilized for medicinal trade. This genus is currently in demand and of popular interest in international horticultural trade. Other species of this genus are known to be threatened by illegal collection of wild individuals. A small population size with existing threat makes this species vulnerable to population loss. Recruitment and recovery from harvesting may be poor. Releasing data on this taxon could exacerbate threat and vulnerability.

This species is extremely rare in the wild and is known to be exploited, utilised or traded. The localities of remaining populations need to be protected to avoid any further exploitation, which is likely to drive it to extinction.

Exploitation extent

Significant - wild individuals of the species are known to be exploited, collected, traded or utilized in a targeted manner, and utilisation is widespread, affects the majority of wild populations and/or is causing rapid decline of the wild population.

Justification and references

According to the SANBI Red List Assessment, this species is Critically Rare as it is known from one site and is not threatened (van Jaarsveld & Raimondo, 2007). This species is known to be utilized for medicinal trade. 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.

van Jaarsveld, E.J. & Raimondo, D. 2007. Gasteria batesiana G.D.Rowley var. dolomitica Van Jaarsv. & A.E.van Wyk. 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 is known from one site (van Jaarsveld & Raimondo, 2007).

van Jaarsveld, E.J. & Raimondo, D. 2007. Gasteria batesiana G.D.Rowley var. dolomitica Van Jaarsv. & A.E.van Wyk. National Assessment: Red List of South African Plants version 2020.1.

Targeted demographics

Mature (breeding) individuals are killed, significantly weakened or are permanently removed from the wild, OR immature individuals are targeted and this significantly impacts mature (breeding) individuals.

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

One known location makes this taxon highly vulnerable to population loss. Recruitment and recovery from harvesting may be poor.

Reference file

Gasteria batesiana dolomitica Threatened Species Programme _ SANBI Red List of South African Plants.pdf533.17 KB

gasteria _ eBay.pdf1.01 MB

Gasteria Aucfan.pdf668.44 KB