Morphological characteristics and the habitats of three new species of the Fagopyrum (polygonaceae) in Panxi area of Sichuan, China

During the investigation on the resources of idioplasm of wild buckwheat in Pan-Xi area (Liangshan Yi Nationality Autonomous Prefecture and Panzhihua City) of Sichuan in China, three new species of wild buckwheat, namely Fagopyrum crispatofolium J. L. Liu, Fagopyrum Liangshanensis J. L. Liu and Fagopyrum densovillosum J. L. Liu are found by the author. The morphological features and the habitats of these species are described and illustrated in this paper.