Medicinal plants contain mucilage used in traditional Persian medicine (TPM).

Ameri A1, Heydarirad G, Mahdavi Jafari J, Ghobadi A, Rezaeizadeh H, Choopani R
Pharm Biol. 2015 Apr;53(4):615-23. doi: 10.3109/13880209.2014.928330. Epub 2014 Dec 9

https://www.ncbi.nlm.nih.gov/pubmed/25489641