Other sources of Quercetin.(CHAPTER VII. Flavonol Group.)

The Natural Organic Colouring Matters
By
Arthur George Perkin, F.R.S., F.R.S.E., F.I.C., professor of colour chemistry and dyeing in the University of Leeds
and
Arthur Ernest Everest, D.Sc., Ph.D., F.I.C., of the Wilton Research Laboratories; Late head of the Department of Coal-tar Colour Chemistry; Technical College, Huddersfield
Longmans, Green and Co.
39 Paternoster Row, London
Fourth Avenue & 30th Street, New York
Bombay, Calcutta, and Madras
1918

Kaikki kuvat (kemialliset kaavat) puuttuvat // None of the illustrations (of chemical formulas) included.

See ONION SKINS, PERSIAN BERRIES, SOPHORA JAPONICA, PODOPHYLLUM EMODI, WHITE CLOVER (Trifolium repens), CUTCH (Acacia catechu and Uncaria gambier), and SUMACH, Osyris compressa, Osyris abysinnica, Ailanthus glandulosa, Rhus rhodanthema, Artostaphylos uva ursi. Quercetin has also been shown to exist probably as glucoside in tea leaves (Hlasiwetz and Malin, Jahres., 1867, 732);
in the flowers of the horse-chestnut (Rochleder, ibid., 1859, 523);
in the bark of the apple-tree (Rochleder, ibid., 1867, 731);
in Craetagus oxycantha (may blossom); and yellow wallflowers, Cheiranthus chieri (Perkin and Hummel, Chem. Soc. Trans., 1896, 69, 1568);
Rumex obtusifolius (seeds), (Perkin, ibid., 1897, 71, 1199);
Delphinium zalil (Asbarg), (Perkin and Pilgrin, ibid., 1898, 73, 381);
Prunus spinosa (flowers), (Perkin and Phipps, ibid., 1904, 85, 56),
Thespasia lampas (Perkin, ibid., 1909, 95, 1859),
the flowers of the Poinciana regia (Bengal), Woodfordia floribunda, and the common fuschia, F. macrostema globosa (Perkin and Shulman, Chem. Soc. Proc., 1914, 30, 177).