Fagopyrum esculentum

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Fagopyrum esculentum Moench

alt=Description de l'image Fagopyrum гречка.jpg.
Ordre Caryophyllales
Famille Polygonaceae
Genre Fagopyrum

2n = 16, 32

Origine : nord-ouest du Yunnan (Chine)

sauvage ou cultivé

Français sarrasin
Anglais buckwheat

Résumé des usages
  • fruits consommés comme pseudo-céréale
  • légume-feuille
  • fourrage
  • médicinal
  • colorant bleu extrait des pailles


Noms populaires

français sarrasin, blé noir
anglais buckwheat
allemand Buchweizen
néerlandais boekweit
italien grano saraceno
espagnol trigo sarraceno, alforfón
portugais sarraceno, trigo mourisco
polonais gryka
russe гречиха - grečiha, гречка - grečka
chinois 荞麦 - qiao mai (Flora of China)
japonais soba
Thaïlande phakbung-som (nord) (PROSEA)
Vietnam mạch ba góc, mạch hoa (PROSEA)
Laos khauz sa:m hlièmx (PROSEA)


Fagopyrum esculentum Moench (1794)

basionyme :

  • Polygonum fagopyrum L. (1753)

synonymes :

  • Fagopyrum vulgare Hill (1756), nom. illeg.
  • Fagopyrum emarginatum (Roth) Moench (1802)

subsp. esculentum

formes cultivées

subsp. ancestrale

  • subsp. ancestrale Ohnishi (1998)

formes sauvages




The cultivated races. Cultivated in Tibet, Himalaya area, India, Russia, China, Korea, Japan, Central and W Europe, but also, more recently, in Canada, USA and Cuba. Common buckwheat is used as a vegetable, as animal feed, as a green manure and as a source for buckwheat honey. But most important for human consumption are the grains, used cooked like rice or as flour for the preparation of pancakes, biscuits, noodles. In eastern Europe it is used for porridge and soups, in SE Asia an unleavened bread is made from the flour. In Russia, where it is an important crop even today, it was not grown to a larger extent until the 15th cent. In central and western Europe it is now a declining crop. In Canada and the USA an increase of the growing area can be observed. Buckwheat is known to have been cultivated in China as early as the 2nd/1st cent. BC. Other sources date the cultivation back to earlier times. It is believed to have been introduced into Japan already about 3.000 years ago, via the Korean peninsula. It is known in Central Europe since the 13th cent. probably introduced via E Europe. The centre of origin is obviously in southern China, where several other Fagopyrum species occur (F. homotropicum Ohnish in Fagopyrum 15 (1998); F. statice Gross; F. urophyllum (Bur. & Franch.) Gross; F. leptopodum (Diels) Hedb.; F. lineare (Sam.) Haralds. Most recently new species closely related to cultivated buckwheat have been described from Sichuan (F. megaspartamium Q.-F. Chen in Bot. J. Linn. Soc. 130 (1999) 62) and Tibet (F. zuogangense Q.-F. Chen, l.c. and F. pilus Q.-F. Chen, l.c.). Some of them may have been involved in the evolution of F. esculentum; but the true wild progenitor is F. esculentum subsp. ancestrale from the north-west corner of Yunnan province. Fagopyrism may occur in animals with light skin after feeding larger amounts of buckwheat. Fagopyrin sensibilizes the skin to light. Also observed in humans after consumption of honey from buckwheat. Buckwheat is a rather variable crop. The most important morphological races are var. esculentum, mainly cultivated in Europe and the New World and var. emarginatum (Roth) Alef. (Landw. Fl., 1866, 286) mainly cultivated in the eastern part of the cultivation area (China, Japan, India), for the infraspecific variation compare also Krotov (1975). Occasionally natural crosses have been occured between this and the following species. The hybrids are amphidiploid and have been described as Fagopyrum giganteum Krotov (in Kul't. Fl. SSSR 3, 1975, 16).



  • Chauvet, Michel, 2018. Encyclopédie des plantes alimentaires. Paris, Belin. 880 p. (p. 565)
  • Campbell, Clayton G., 1997. Buckwheat. Fagopyrum esculentum Moench. Promoting the conservation and use of underutilized and neglected crops, 19. Gatersleben, Institute of Plant Genetics and Crop Plant Research / Rome, International Plant Genetic Resources Institute. 93 p. télécharger sur Bioversity
  • Dambourney, Louis-Alexandre, 1786. Recueil de procédés et d'expériences sur les teintures solides que nos végétaux indigènes communiquent aux laines & aux lainages. Paris, De l'imprimerie de Ph.-D. Pierres, premier imprimeur ordinaire du roi. 407 p. Voir sur Pl@ntUse
  • Ohnishi, O., 1998. Search for the wild ancestor of buckwheat III. The wild ancestor of cultivated common buckwheat, and of Tatary buckwheat. Econ. Bot., 52: 123-133. doi: 10.1007/BF02861199
  • Schilperoord, Peer, 2017. Plantes cultivées en Suisse – Le sarrasin. 29 p. doi : 10.22014/97839524176-e8.