Fig. 1

Field photographs of Fagopyrum taxa show divergent morphological features. a F. cymosum (Photo was taken from Jiguanshan, Chongzhou, Sichuan, China); b F. gracilipes var. odontopterum (Photo was taken from Yangchang, Dafang, Guizhou, China); c F. leptopodum var. grossii (Photo was taken from Jinsha, Leibo, Sichuan, China); d F. statice (Photo was taken from Yumeidu, Shilin, Yunnan, China); e F. caudatum (Photo was taken from Tonghua, Wenchuan, Sichuan, China); f F. gracilipes (Photo was taken from Waziping, Dujiangyan, Sichuan, China); g F. qiangcai (Photo was taken from Bashinao, Lixian, Sichuan, China); h F. leptopodum (Photo was taken from Ala, Panzhihua, Sichuan, China); i F. urophyllum (Photo was taken from Jizushan, Binchuan, Yunnan, China)