The discussion on “Flora and Fauna of India” at INDOLOGY (May 2021) led to the mention of several useful resources for identifying plants in early Indian literature. (It has long been inadequate to cite Monier-Williams.)
A useful key to resources for modern binomial plant names and taxonomies (that are subject to change and revision):
The Biodiversity Heritage Library is an extraordinarily rich collection of indexed and scanned botanical research books from the fifteenth century onwards. See, for example, this illustration from,
- Hortus Malabaricus, vol. 1 (Amsterdam, 1678).