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{{Species page (seed plant)
|image = None50x50Coleus esculentus tubercules Scamperdale.jpg
|legend =
|author = <br>(N. E. Br.) G. Taylor|order = Lamiales|family = Lamiaceae|genus = Coleus|nb chromosomes = 2n = 64|origin = area of originTropical africa|status = wild or and cultivated|english = Madagascar potato|french = pomme de terre de Madagascar
}}
{{Box
|title = Uses summary
|color = lightgreen
|text =*starchy tuber*leaves : vegetable*medicinal
}}
== Description ==
<gallery mode=packed>
File:Koorka 0110.jpg|culture
File:Koorka 0115.jpg|flowering plant
File:Plectranthus rotundifolius by kadavoor.jpg|flowers
File:Plectranthus rotundifolius DSCN0613.jpg|tubers
</gallery>
* perennial plant with rounded or ovoid underground tubers varying in size (from the size of a hazelnut to that of a small lemon)
* fleshy stems, quadrangular, erect or half-recumbent, sometimes rooting
* oval, crenate, and slightly obtuse leaves, with more or less short and brittle petiole
* blue flowers arranged into false whorls (Chevalier)
== Popular names ==
{| class="wikitable" style="width:100%;"
| English| Madagascar potato, Hausa potato, country potato (PROSEA) ; frafra potato, Sudan potato, coleus potato, Zulu round potato (PROTA)|-| French | pomme de terre de Madagascar (PROSEA) ; pomme de terre du Soudan (PROTA)|-| Bambara| oussou ni fing ("petite patate noire") (Chevalier) |-| Malagasy| ranofaritra (mérina), voamitra (sakalava) (Boiteau)|-| Indonesian | kentang Jawa (indonésien), kentang ireng (javanais), huwi kentang (sundanais) (PROSEA)|-| Malaysian | ubi kembili, ubi keling (PROSEA)|-| Thaï| man-khinu, man-nu (sud) (PROSEA)
|}
== Classification ==
''Coleus rotundifolius'' (Poir.) A. Chev. & Perrot (1905)
basionyme :
*''Germanea rotundifolia'' Poir. (1788)
synonyme :
*''Plectranthus rotundifolius'' (Poir.) Spreng. (1825)
*''Plectranthus tuberosus'' Blume (1826)
*''Coleus parviflorus'' Benth. (1848)
*''Solenostemon rotundifolius'' (Poir.) J. K. Morton (1962)
== Cultivars ==
Chevalier distinguishes varieties with black, brown, reddish, whitish tubers.
== History ==
Chevalier already noted in 1953 the regression of the culture of this species.
== Uses ==
{{Citation box
|text=Only cultivated. The native area is not definitely known; probably of tropical African origin (Madagascar, Ethiopia). Cultivated as a food crop in tropical Africa, India (Kerala, Tamil Nadu, Karnataka), Sri Lanka and SE Asia. The starchy, slightly aromatic tubers are eaten boiled or steamed, sometimes raw. Cooked leaves also eaten as a vegetable. Used as a medicinal plant against dysentery and eye diseases in parts of tropical Africa and regarded as a potential anti-cancerogen. Formerly widely grown in the drier parts of tropical Africa, but now replaced mostly by ''Solanum tuberosum, Manihot esculenta, Arachis hypogaea'', etc., despite of its nutritional quality and high capacity of yielding on soils of low fertility. Several cultivars differing in colour and size of the tubers can be distinguished.
|author =Mansfeld.
}}
== References ==
* Busson F., Jaeger Paul, Carbiener R., Lanza J., 1959. Contribution à à l'étude botanique et chimique des tubercules de ''Coleus rotundifolius'' (Poir.) A. Chev. ''Journal d'agriculture tropicale et de botanique appliquée'', '''6''' (12) : 675-679. [https://doi.org/10.3406/jatba.1959.2584 doi : 10.3406/jatba.1959.2584]
* Chevalier, Auguste. & Perrot, Emile, 1905. Les ''Coleus'' à tubercules alimentaires. in ''Végétaux Utiles de l'Afrique tropicale française'', Vol. I, fasc. 1, p. 100-152.
* Chevalier Auguste, 1938. Les Labiées cultivées ou utilisées dans les Pays tropicaux. ''Revue de botanique appliquée et d'agriculture coloniale'', '''18''' (203) : 470-488. [https://doi.org/10.3406/jatba.1938.5884 doi : 10.3406/jatba.1938.5884]
*Chevalier, Auguste, 1946. Notes et actualités. Un légume tropical à répandre : la petite pomme de terre d'Afrique (''Coleus rotundifolius''). ''Revue internationale de botanique appliquée et d'agriculture tropicale'', '''26''' (285-286) : 296-300. [https://www.persee.fr/doc/jatba_0370-5412_1946_num_26_285_1920 Persée]
* Chevalier, Auguste, 1953. Labiées du Genre ''Coleus'' Loureiro cultivées dans les Pays tropicaux de l'Ancien Monde. ''Revue internationale de botanique appliquée et d'agriculture tropicale'', '''33''' (369-370) : 334-341. [https://doi.org/10.3406/jatba.1953.6788 doi : 10.3406/jatba.1953.6788]
*Miège, J. & Moncousin, C., 1989. Deux espèces à tubercules comestibles menacées de disparition: ''Solenostemon rotundifolius'' et ''Plectranthus esculentus'' (Lamiacées). Possibilité de leur conservation par micropropagation. ''Bull. Soc. Bot. France, Actual. Bot.'', '''136''' (3/4): 185-193.
== Links ==
*[http://www.biodiversitylibrary.org/search.aspx?SearchTerm=Plectranthus%20rotundifolius&SearchCat= BHL]
*[http://www.ars-grin.gov/cgi-bin/npgs/html/tax_search.pl?Plectranthus%20rotundifolius GRIN]
*[http://www.ipni.org/ipni/simplePlantNameSearch.do?find_wholeName=Plectranthus%20rotundifolius&output_format=normal&query_type=by_query&back_page=query_ipni.html IPNI]
*[http://mansfeld.ipk-gatersleben.de/pls/htmldb_pgrcapex/f?p=185:4546:13291644128746015933851051831::NO::P7_BOTNAMEmodule,P7_DB_CHECKBOX1mf_use,P7_DB_CHECKBOX2source,P7_DB_CHECKBOX4akzanz,rehm,akzname,taxid:mf,,botnam,0,,Plectranthus%20rotundifolius,,, 15814 Mansfeld]*[http://www.plantnames.unimelb.edu.au/Sorting/Plectranthus.html Multilingual Plant Name Database]*[http://www.hort.purdue.edu/newcrop/nexus/Plectranthus_rotundifolius_nex.html NewCrop Purdue]
*[http://www.theplantlist.org/tpl1.1/search?q=Plectranthus+rotundifolius Plant List]
*[http[:en://pfaf.org/user/Plant.aspx?LatinName=Plectranthus%20rotundifolius Plants for a futurerotundifolius (PROSEA)|PROSEA sur Pl@ntUse]]*[http://proseanet.org/prosea/e-prosea.php PROSEA[Solenostemon rotundifolius (PROTA)|PROTA sur Pl@ntUse]]
*[http://www.tela-botanica.org/page:eflore_bdtfx?referentiel=bdtfx&niveau=2&module=fiche&action=fiche&type_nom=nom_scientifique&nom=Plectranthus%20rotundifolius Tela Botanica]
*[http://tropical.theferns.info/viewtropical.php?id=Plectranthus%20rotundifolius Useful Tropical Plants Database]
*[https://fr.wikipedia.org/wiki/Plectranthus%20rotundifolius Wikipédia]
