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Table 4 Part of the plant, preparation and application of the species traditionally used for dying and varnishing wooden bowls in Gyirong Town, Tibet, China

From: Plants for making wooden bowls and related traditional knowledge in the Gyirong Valley, Tibet, China

  Scientific name (Family) Use parts Use and preparation
Plants used as dyes Berberis xanthophlaea Ahrendt (Berberidaceae) Bark and root The barks or roots can also be used to produce yellow dyes. The dye solution preparation method is the same way as Rheum australe
Fallopia denticulata (C. C. Huang) Holub (Polygonaceae) Rhizome Rhizomes of Rheum australe and Fallopia denticulata are used together to make red dye solution in the same way as Rheum australe
Rheum australe D. Don (Polygonaceae) Rhizome The rhizomes are used to produce yellow dye solution. First, put dried rhizomes into boiling water about 30 min. After the dye solution has cooled, which can be used to dye yellow. And rhizomes of Rheum australe and Fallopia denticulata are used together to make red dye solution in the same way as Rheum australe
Plants used as varnishes Impatiens bicornuta Wall. (Balsaminaceae) Seed The seeds are used to produce natural varnishes. First, collect mature Impatiens seeds, dry them, grind them, and coat the pre-dyed wooden bowls with the resulting oils
Impatiens falcifer Hook.f. (Balsaminaceae) Seed
Impatiens scabrida DC. (Balsaminaceae) Seed
Impatiens sulcata Wall. (Balsaminaceae) Seed