Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by function]
6. colorant (material)
7. pigments
8. [pigment by color]
9. green pigment
10. organic green pigment

Anotations

Scope note:

An organic green colorant extracted from the crushed flowers of iris or lilies, producing a clear green color that was precipitated on alumina trihydrate and used in manuscript painting. It is no longer used. Iris green was replaced in the 17th century by sap green, which was made from unripe buckthorn berries. The color of the two materials were similar and the name, iris green, was sometimes used for the sap green extract.