Also known as flax. In Arabic it is badhir alkitaan. In Latin it is Linum usitatissimum. TCM has it as Ya Ma Zi.
Suyuti quotes Avicenna as “Verily salt should be used as a paste together with linseed for the poison of scorpions, for it is an antidote for both hot and cold poisons. It attracts the poison and then dissolves it.”
A “demulcent, emollient, and expectorant… widely used as a stomachic cleanser and to soothe inflammations of the intestinal tract and throat and urinary passages.” (Robert Thomson, in “The Grosset Encyclopedia of Natural Medicine” (1980))
It is a “demulcent” and can be used as a poultice to deal with inflammation and pain. (Menzies-Trull in "The Herbalist's Prescriber")
A “demulcent [relieves inflammation or irritation], anti-tussive [prevents and relieves coughs], laxative, emollient [soothes the skin]” used for bronchitis, pleurisy and as a poultice for, amongst other things, psoriasis. A purgative for constipation.” (David Hoffman in “The New Holistic Herbal”).
It is not listed by Dan Bensky and Andrew Gamble, in “Chinese Herbal Medicine Materia Medica”