It consisted principally of the different species of millet, as before observed, and a small proportion of polygonum fagopyrum or buck-wheat.
"Travels in China, Containing Descriptions, Observations, and Comparisons, Made and Collected in the Course of a Short Residence at the Imperial Palace of Yuen-Min-Yuen, and on a Subsequent Journey through the Country from Pekin to Canton"
John Barrow