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Zantedeschia jucunda

Assessor: Sarah Schumann

Sensitive in 2010
Yes
Family
Araceae
Reason for the sensitivity status
This species is threatened with removal of wild individuals for horticultural purposes. This genus is currently in demand and of popular interest in international horticultural trade. Few known locations occurrence with several existing threats makes this species vulnerable to further population loss. recruitment and recovery from harvesting may be poor. Releasing data on this species could exacerbate threat and responsibility.
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 Vulnerable as it is known from five to ten locations and is threatened with removal of wild individuals for horticultural purposes as well as potentially threatened by mining and expanding development (von Staden et al. 2008). 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. This suggests that this genus may be targeted and that endangered species of this genus may be at risk to over-exploitation.

von Staden, L., Winter, P.J.D. & Raimondo, D. 2008. Zantedeschia jucunda Letty. 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 380 km² and is known to be declining at five to ten locations (von Staden et al. 2008).

von Staden, L., Winter, P.J.D. & Raimondo, D. 2008. Zantedeschia jucunda Letty. 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

Few known locations of occurrence and exploitation as well as other threats (von Staden et al. 2008), places the persistence of this species at risk whereby recruitment and recovery may be poor.

von Staden, L., Winter, P.J.D. & Raimondo, D. 2008. Zantedeschia jucunda Letty. National Assessment: Red List of South African Plants version 2020.1. 
 

Reference file
zantedeschia.pdf725.05 KB
Zantedeschia jucunda Threatened Species Programme _ SANBI Red List of South African Plants.pdf788.11 KB