White-haired Cycad

Encephalartos friderici-guilielmiLehm.

Plante

NTLR Monde (IUCN)

Filtrer le graphe par contexte spatialPays · région · aire protégée · écorégion · biome

Graphe en cours d’indexation

Calcul du tissu écologique de Encephalartos friderici-guilielmi.

Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).

Liste rouge IUCN

NT · Quasi menacéecritères A2ac+4ac↘Décroissante

Évaluation complète

Évaluation: 2022 · v3.1
Altitude: 700 – 1400 m
Profondeur: – m

État de la populationTexte officiel évaluation IUCNExpert

This is a relatively abundant species. There has been no recent revision to the population estimate for this species. However, one subpopulation occurring near Tsolo in the Eastern Cape has been killed off through persistent harvesting of stem fragments for medicinal purposes and another subpopulation near Kokstad has been showing a persistent decline for unknown reasons. These represent entire locations with implications for the reduction in known subpopulations, EOO and AOO. The overall decline is still estimated to be less than 30% over three generations.

Menaces identifiées(2 menaces classées CMP-IUCN)

12_1
Other threat
Rapid DeclinesMinority (<50%)Ongoing
5_2_1
Intentional use (species is the target)
UnknownUnknownOngoing

Description complète des menacesTexte détaillé évaluation IUCNExpert

This species is threatened due to over-collecting for ornamental purposes and as a result of traditional muthi (medicine) harvesting which is still ongoing. Considerable mortality was noted in the subpopulations near to Kokstad. It is unsure what is causing this (D. Ricketts. pers. comm. 2011)

Habitats préférentiels (classification IUCN)

3_4Shrubland - Temperate
4_4Grassland - Temperate

Mesures de conservation recommandéesStratégies de conservation IUCNExpert

This species is listed in Appendix I of the CITES Appendices. Plants are found in the Longhill Nature Reserve and the Lawrence De Lange Nature Reserve near Queenstown. An education and awareness programme linked to bark harvesting, as well as the long-term monitoring of subpopulations will support the conservation of this species.

Actions de conservation (2)Conservation Actions Classification Scheme — IUCNExpert

1_1Site/area protection
4_3Awareness & communications

Stress écologiques (2)Stresses Classification — IUCNExpert

2_1Species mortality
2_1Species mortality

Usage & commerce (3)Use & Trade — IUCNExpert

13Pets/display animals, horticulture
internationalnational
16Establishing ex-situ production *
national
3Medicine - human & veterinary
subsistance

Priorités de recherche (4)Research Needed Classification — IUCNExpert

1_2Population size, distribution & trends
1_3Life history & ecology
1_6Actions
3_1Population trends

Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert

Royaumes biogéographiques

Afrotropical

Systèmes (terrestre/eau douce/marin)

Terrestrial

Formes de croissance

CycadTree - large

Références bibliographiques (5)Sources scientifiques de l'évaluation IUCNExpert

IUCN. 2023. The IUCN Red List of Threatened Species. Version 2023-1. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 07 December 2023).
IUCN. 2022. The IUCN Red List of Threatened Species. Version 2022-1. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 21 July 2022).
Cousins, S.R., Williams, V.L. and Witkowski, E.T.F. 2012. Uncovering the cycad taxa (Encephalartos species) traded for traditional medicine in Johannesburg and Durban, South Africa. South African Journal of Botany 78: 129-138.
Scott-Shaw, C.R. 1999. Rare and Threatened Plants of KwaZulu-Natal and Neighbouring Regions. KwaZulu-Natal Nature Conservation Services, Pietermaritzburg.
Kemp, M. 1989. Focus on Encephalartos friderici-guilielmi. Encephalartos 18: 4-9.

Évaluateurs & contributeurs (3)Personnes ayant contribué à l'évaluation IUCNExpert

assessor

Bösenberg, J.D.

contributor

Donaldson, J.S.

evaluator

Donaldson, J.S.

⚠ 1 erratum publié après l'évaluation.

Bösenberg, J.D. 2022. Encephalartos friderici-guilielmi (errata version published in 2023). The IUCN Red List of Threatened Species 2022: e.T41930A243426246. Accessed on 05 May 2026.