Livingstone Potato

Taxonomy
Scientific Name
Plectranthus esculentus N.E.Br.
Higher Classification
Dicotyledons
Family
LAMIACEAE
Synonyms
Plectranthus floribundus N.E.Br.
Common Names
African Potato (e), Itapile (x), Scrambled Eggs (e), Tapole Emahlo (ss), Ujangu (z), Ujilo (z), Umbondwe (z), Umhlaza (z), Wild Potato (e), Wilde-aartappel (a)
National Status
Status and Criteria
Least Concern
Assessment Date
2022/11/22
Assessor(s)
D. Raimondo & W. McCleland
Justification
This species was extensively cultivated as a food crop in the past, but cultivation has declined in favor of more successful domesticated crops. It is still consumed in some parts of Africa, with recent records of consumption noted in Tanzania. Several scattered subpopulations of this species have been documented between the Democratic Republic of Congo and South Africa, and many more unrecorded subpopulations are suspected to exist. The species has a minimum global extent of occurrence (EOO) of 735 742 km², while in South Africa, its EOO is at least 44 905 km². Although it is challenging to determine whether recorded subpopulations are natural wild populations or the result of human distribution across the subcontinent, the overall population is not suspected to be declining, and the species is listed as Least Concern.
Distribution
Endemism
Not endemic to South Africa
Provincial distribution
KwaZulu-Natal, Limpopo, Mpumalanga
Range
It is widely cultivated, but natural range is poorly known, it has been recorded throughout southern Africa from southern Tanzania through to KwaZulu Natal in South Africa.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Grassland, Savanna
Description
It occurs in open Savannas and grassland habitats throughout its range.
Threats
While some subpopulations of this species are threatened by overgrazing and too frequent fires, leading to failed recruitment due to the loss of seeds and seedlings, the overall population is not suspected to be declining.
Population

Scattered subpopulations of this species have been recorded throughout southern Africa. Since it is a species that is edible its natural distribution is difficult to know and the subpopulations recorded from the wild may have been distributed historically by people. This species was previously thought to be very rare in South Africa as there was only one record collected for it from Inanda over a 30 year period. However there are a number of historic records from throughout the country and recent records from Mpumalanga and eSwatini which indicate that it is likely that a number of subpopulations are still extant in South Africa. Recent observations posted on iNaturalist from Zambia, and the Democratic Republic of Congo confirm this species' scattered presence throughout the sub continent. The population trend is suspected to be stable.


Population trend
Stable
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Plectranthus esculentus N.E.Br.Data Deficient Raimondo et al. (2009)
Bibliography

Crouch, N.R. and Styles, D.G.A. 2010. Lamiaceae: Rediscovery in South Africa of the neglected African vegetable Plectranthus esculentus. Bothalia 40(1):65-67.


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.


Citation
Raimondo, D. & McCleland, W. 2022. Plectranthus esculentus N.E.Br. National Assessment: Red List of South African Plants version . Accessed on 2024/12/06

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Distribution map


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