Conophytum phoenicium S.A.Hammer
Status and Criteria
Critically Endangered A2ac
|A.J. Young & L. von Staden|
|Field observations indicate a significant population reduction within three generations. Although the population data is very uncertain, it is suspected that it has declined by around 80%. Recent attempts to locate this species in the wild have failed. The reasons for the population reduction are not understood, but may be related to habitat degradation. It is not known whether threats have ceased, and the current population trend is not known. The last field observations were of extremely small, isolated groups of plants occurring within a few square meters or less. It is therefore possible that it may be overlooked, and it is not suspected to be extinct, but further field surveys, particularly in years of good rainfall are needed.|
|South African endemic|
|Richtersveld near Umdaus, north of Steinkopf.|
Habitat and Ecology
|Umdaus Mountains Succulent Shrubland|
|Part of the population was lost to road construction in the 1990s (Hammer 2002), and there has been further sporadic impacts from mining exploration on the habitat. This however does not explain the extensive population decline observed over the past 20-25 years. There may have been degradation and trampling of quartz flats by livestock - the area is part of communally owned rangelands.|
This species is known from a single subpopulation that was estimated to consist of several thousand plants in the 1990s (Hammer 2002). It has however not been observed in its habitat for several years, despite many field visits to the immediate area. The population appears to have declined significantly, but the reasons are not known. The last two observations of this species in the wild were of extremely small, localized clumps of fewer than 50 individuals. It is possible that a few other, overlooked small clumps of plants exist. It is therefore difficult to determine the size of the remaining wild population, which is possibly very small, perhaps less than 500 mature individuals. Due to the uncertainty around population size estimates, it is difficult to infer the extent of the population reduction. It is suspected to be at least 50%, but is probably as much as 80-90%. C. phoenicium is a relatively short-lived species (generation length of only a few years), but the decline occurred over a very short time frame, within three generations. The current population trend is unknown.
Status and Criteria
Citation/Red List version
|Conophytum phoenicium S.A.Hammer||VU D2||Raimondo et al. (2009)|
|Conophytum phoenicium S.A.Hammer||VU D2||Victor (2002)|
|Conophytum phoenicium S.A.Hammer||Rare ||Hilton-Taylor (1996)|
Hammer, S. 2002. Dumpling and his wife: New view of the genus Conophytum. EAE Creative Colour, Norwich.
Hammer, S.A. 1993. The genus Conophytum: A conograph. Succulent Plant Publications, Pretoria.
Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.
Raimondo, D., von Staden, L., Foden, W., Victor, J.E., Helme, N.A., Turner, R.C., Kamundi, D.A. and Manyama, P.A. 2009. Red List of South African Plants. Strelitzia 25. South African National Biodiversity Institute, Pretoria.
Snijman, D.A. 2013. Plants of the Greater Cape Floristic Region 2: The extra Cape flora. Strelitzia 30. South African National Biodiversity Institute, Pretoria.
Victor, J.E. 2002. South Africa. In: J.S. Golding (ed), Southern African plant Red Data Lists. Southern African Botanical Diversity Network Report 14 (pp. 93-120), SABONET, Pretoria.
|Young, A.J. & von Staden, L. 2016. Conophytum phoenicium S.A.Hammer. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2017/03/27|