The correct answer is 1.- Yucca, and 2.- Iron oxide.
To create this piece, the painter used his/her fingers and Yucca fiber brushes to apply reddish pigment made from iron dioxide.
Yucca, the family Asparagaceae is perennial shrubs. It has almost fifty species. Yucca can be found in arid regions of the Americas and the Caribbean islands. The Yucca is characterized by their rosettes of evergreen, sword-shaped leaves with large panicles full of flowers in white color.
Iron oxide is also known as ferric oxide. It is one of the three main oxides of iron. As a Hematite is the main source of steel used in the construction.
