the plant lore and agricultural customs of a people.
Anthropology. the systematic study of such lore and customs.
Origin of ethnobotany
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
the branch of botany concerned with the use of plants in folklore, religion, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012