The following notes refer to the species of this plant. H. petiolare is used in South African traditional medicine to treat fever, catarrh, cold, cough, menstrual disorders, kidney-related infections, chest problems, high blood pressure, and erectile dysfunction.

www.plantzafrica.com https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8398148/#:~:text=creamy%20%5B15%5D.-,H.,blood%20pressure%2C%20and%20erectile%20dysfunction.