Babiana rubrocyanea | SANBI Sensitive Species

Assessor: Juan Swanepoel

Sensitive in 2010

Family

Iridaceae

Reason for the sensitivity status

There have been recorded confiscations of species of the Babiana genus from illegal collection. This genus is in demand and of popular interest in international horticultural trade. Few known subpopulations with existing threats causing population decline makes this species vulnerable to population loss. Were exploitation to also occur, recruitment and recovery may be poor. Releasing data on this species could exacerbate threat and vulnerability.

This species is either similar to 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 Endangered (von Staden, 2015). This species and genus are increasing in demand and of popular interest in local and international horticultural trade as indicated by several online marketplace, e-commerce and auction sites. There have been recorded confiscations of Babiana spp. from illegal collections (2021, confiscation data provided by Kirstenbosch National Botanical Garden). This suggests that this genus is being targeted and that this species may be at risk from the wild.

von Staden, L. 2015. Babiana rubrocyanea (Jacq.) Ker Gawl. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2021/12/24

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

All remaining subpopulations occur on small renosterveld fragments. Between six and eight subpopulations remain. Subpopulations are generally small, and five of these are isolated due to extensive loss of surrounding renosterveld to crop fields. The population is therefore considered severely fragmented, and continues to decline due to ongoing habitat loss and degradation (von Staden, 2015).

von Staden, L. 2015. Babiana rubrocyanea (Jacq.) Ker Gawl. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2021/12/24

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

The population growth rate is unknown. Population size is likely to be limited by suitable habitat. Should exploitation occur, even if only cuttings or leaves are collected, compounded with ongoing urban expansion, alien plant invasion particularly grasses, and habitat degradation due to heavy grazing of small fragments which have been identified as threats (von Staden, 2015), the chance of populations recovering may be poor.

von Staden, L. 2015. Babiana rubrocyanea (Jacq.) Ker Gawl. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2021/12/24