Reason for the sensitivity status
This species is thought to be collectible for horticultural trade, has a restricted range, and occurs in an area known to be targeted by illegal collection. Several others of the genus are known to be targeted, exploited and illegally removed from the wild, causing population decline. Evidence shows that the Bulbine genus is in high demand in international horticultural trade. A restricted range makes this species highly vulnerable to population loss. Releasing data on this species can exacerbate threat and vulnerability.
This species is either similar to another sensitive species 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 of Least Concern (van Jaarsveld & Potter, 2005). This species is thought to be collectible for horticultural trade, has a restricted range, and occurs in an area known to be targeted by illegal collection (A. Harrower, personal communication, 3 August 2022). This genus is in demand and of popular interest in international horticultural trade, as indicated by several online marketplace, e-commerce and auction sites. Plants of this genus were among those targeted and/or confiscated during recent criminal prosecutions of illegal plant collecting. There have been several recorded confiscations of this species and others of the Bulbine genus from illegal collection (Confiscation List (2018-2021) provided by Cape Nature, SANParks Sendelingsdrift Botanic Garden, Karoo Desert Botanic Garden and Kirstenbosch Botanical Garden).
van Jaarsveld, E.J. & Potter, L. 2005. Bulbine diphylla Schltr. ex Poelln. 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 species has a restricted range (A. Harrower, personal communication, 3 August 2022).
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
Vulnerable to collection, a restricted range, and occupying an area known to be targeted for illegal collection exacerbates this species threat and vulnerability. Were exploitation to occur, recruitment and recovery may be poor.
