Buckwheat leaves are generally triangular or ovate-triangular, the length of about 2.5 to 7 centimeters, about 2 to 5 centimeters wide, the tip of the leaf acuminate.

Buckwheat, also known as nettlesome grass, oat, triangular wheat, 75 days to maturity, the north can be two seasons, annual herbs. Stem erect, 30-90 cm tall, upper branches, green or red, with longitudinal ribs, glabrous or on one side along the longitudinal ribs with papillae, leaves triangular or ovate-triangular, 2.5-7 cm long, 2-5 cm wide, apical acuminate, the base cordate, on both sides of the leaf along the veins with papillae.

The lower leaves with long petioles, the upper smaller nearly sessile, stipular sheaths membranous, short cylindrical, about 5 mm long, apical oblique, unciliated, easy to break off. Buckwheat prefers cool and humid climate, intolerant of heat, drought, wind, fear of frost, like sunshine, need more water, belong to the annual herbs.

Distribution

Inflorescences racemose or corymbose, terminal or axillary, peduncle with a small protuberance on one side, bracts ovate, about 2.5 mm, green, with membranous margins, each bract with 3-5 flowers, pedicels longer than the bracts, non-articulated, white or reddish, perianth segments ellipsoid, 3-4 mm long.

Overall, China's buckwheat is mainly distributed in Inner Mongolia, Shaanxi, Gansu, Ningxia, Shanxi, Yunnan, Sichuan, Guizhou, followed by Tibet, Qinghai, Jilin, Liaoning, Hebei, Beijing, Chongqing, Hunan, Hubei and other regions. After thousands of years of dissemination and cultivation, buckwheat in the world in addition to Antarctica without buckwheat cultivation, Asia, Africa, North America, South America, Europe, Oceania are buckwheat cultivation.