"Sheep sorrel is a perennial plant that is in the buckwheat family. It reproduces by seed and by spreading horizontal roots. It is well recognized within the alternative cancer treatment community as one of the ingredients in Essiac tea."
"The Buckwheat family is as familiar as rhubarb or sorrel. If you grow either of these plants in your garden, then be sure to look at the flowers and seeds. The Buckwheats have simple, toothless leaves and often swollen joints, or nodes, on the stems, plus lots of small flowers in clusters or spikes."