Soap plant

Scientific: Chenopodium californicum 

Common: Soap plant 

Español: Raíz de Lavar  

Chumash ('alapkaswa'): su’nuk’ 

Roots were scraped or grated to make a soapy lather to wash hair, skin, or clothing. Tea made from the root bark was used to treat constipation.

Source: Chumash Ethnobotany: Plant Knowledge Among the Chumash People of Southern California by Jan Timbrook

'alapkaswa' refers to the local Chumash dialect spoken at the kaswa’ village near modern Hope Ranch.