Trois crayons [SEP] material used
Trois crayons
Trois crayons (French for "three chalks") is a drawing technique using three colors of chalk: red "(sanguine)," black, and white. The paper used may be a mid-tone such as grey, blue, or tan. Among numerous others, François Boucher and the French painter Antoine Watteau drew studies of figures and drapery "aux trois crayons." The technique was, most notably, pioneered and popularised by the Flemish master Peter Paul Rubens.
"Aux deux crayons
of the genera "Laetiporus" and "Sparassis", are used as food. Blackfellow's bread, or "Laccocephalum mylittae", is an edible that is prized by Aboriginal Australians. "Lentinus squarrosulus" is collected and eaten in Asian and African communities.
"Fomitopsis betulina" was formerly used in the manufacture of charcoal crayons. Amadou, a spongy material derived from the fruit bodies of "Fomes fomentarius", has been used since ancient times as a tinder. More recently, it has been used by dentists