Gasteria pillansii var. hallii | SANBI Sensitive Species

Assessor: Sarah Schumann

Sensitive in 2010

Family

Asphodelaceae

Reason for the sensitivity status

This variety is threatened by illegal collection of wild individuals. This genus is currently in demand and of popular interest in international horticultural trade. A small population size makes this species vulnerable to further 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 Endangered as it is known from two locations and threatened with collection of wild individuals for the specialist succulent horticultural trade (van Jaarsveld & Raimondo, 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.

van Jaarsveld, E.J. & Raimondo, D. 2015. Gasteria pillansii Kensit var. hallii Van Jaarsv. 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 90 km² and is known from two sites (van Jaarsveld & Raimondo, 2015).

van Jaarsveld, E.J. & Raimondo, D. 2015. Gasteria pillansii Kensit var. hallii Van Jaarsv. 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.

Justification and references

Whole individuals are removed from the wild.

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

Two known locations and threat places the persistence of this taxon at risk of extinction. Recruitment and recovery from harvesting may be poor.

Reference file

gasteria _ eBay.pdf1.01 MB

Gasteria Aucfan.pdf668.44 KB

Gasteria pillansii hallii Threatened Species Programme _ SANBI Red List of South African Plants.pdf754.46 KB