Plant material
The roots of Z. nummularia were collected from Takht Bhai District Mardan, Khyber Pakhtunkhwa, Pakistan. The plant was identified and authenticated by Professor Dr. Abdur Rashid, a botanist at the Botany Department, University of Peshawar, Pakistan. A voucher specimen (BOT 200399) has been deposited in the herbarium of the department of Botany, University of Peshawar, Pakistan.