Fagopyrum

Ny Fagopyrum dia vondron-karazan-javamaniry ahitra ao amin' ny fianakaviana Polygonaceae, ao amin' ny filaharana Caryophyllales, anisan' izany ny Fagopyrum esculentum, karazana ambolena hahazoana voany mitovy amin' ny voamadinika. Tafiditra ao anatin' izany ny zava-maniry manan-danja sasany toy ny Fagopyrum tataricum.  Ity vondron-karazana ity dia teratany any amin' ny Zana-kôntinanta Indiana, any amin' ny ampahany be amin' i Indôsina, any amin' ny afovoany sy atsimo-atsinanana amin' i Sina, ary any afovoany sy atsinanana amin' i Afrika trôpikaly. Nampidirina be dia be tany an-kafa ny karazana maro, nanerana ny faritra Hôlarktika sy ny faritra sasany aty Afrika sy any Amerika Atsimo.

 Karazana 
Tamin' ny Oktobra 2025, ny Plants of the World Online dia nanaiky ireto karazana manaraka ireto:

 Fagopyrum callianthum Ohnishi
 Fagopyrum capillatum Ohnishi
 Fagopyrum caudatum (Sam.) A.J.Li
 Fagopyrum crispatifolium J.L.Liu
 Fagopyrum cymosum (Trevir.) Meisn.
 Fagopyrum densivillosum J.L.Liu
 Fagopyrum esculentum Moench -  varimbazahamainty
 Fagopyrum gilesii (Hemsl.) Hedberg
 Fagopyrum gracilipedoides Ohsako & Ohnishi
 Fagopyrum gracilipes (Hemsl.) Dammer
 Fagopyrum homotropicum Ohnishi
 Fagopyrum jinshaense Ohsako & Ohnishi
 Fagopyrum kashmirianum Munshi
 Fagopyrum leptopodum (Diels) Hedberg
 Fagopyrum lineare (Sam.) Haraldson
 Fagopyrum longistylum M.L.Zhou & T.Yu
 Fagopyrum longzhoushanense J.R.Shao
 Fagopyrum luojishanense J.R.Shao
 Fagopyrum macrocarpum Ohsako & Ohnishi
 Fagopyrum pleioramosum Ohnishi
 Fagopyrum pugense T.Yu
 Fagopyrum qiangcai D.Q.Bai
 Fagopyrum rubrifolium Ohsako & Ohnishi
 Fagopyrum snowdenii (Hutch. & Dandy) S.P.Hong
 Fagopyrum statice (H.Lév.) Gross
 Fagopyrum tataricum (L.) Gaertn.
 Fagopyrum tibeticum (A.J.Li) Adr.Sanchez & Jan.M.Burke
 Fagopyrum urophyllum (Bureau & Franch.) Gross
 Fagopyrum wenchuanense J.R.Shao
 Fagopyrum zuogongense Q.F.Chen

 Jereo koa 

 Duma

 Muehlenbeckia

 Oxygonum

 Persicaria

 Polygonum

 Rumex