Mbh 13.98.5b

Some are wild; some are from trees that grew in the midst of human habitations; some belong to trees that never grow unless planted on well-tilled soil; some are from trees growing on mountains; some are from trees that are not prickly; and some from trees that are prickly. Fragrance, beauty of form, and taste also may offer grounds of classification. The scent that flowers yield is of two kinds, agreeable and disagreeable. Those flowers that emit agreeable scent should be offered to the deities. The flowers of trees that are destitute of thorns are generally white in hue. Such flowers are always acceptable to the deities, O lord! One possessed of wisdom should offer garlands of aquatic flowers, such as the lotus and the like, unto the Gandharvas and Nagas and Yakshas. Such plants and herbs as produce red flowers, as are possessed of keen scent, and as are prickly, have been laid down in the Atharvana as fit for all acts of incantation for injuring foes. Such flowers as are possessed of keen energy, as are painful to the touch, as grow on trees and plants having thorns, and as are either bloody-red or black, should be offered to (evil) spirits and unearthly beings. Such flowers as gladden the mind and heart, as are very agreeable when pressed, and as are of beautiful form, have been said, O lord, to be worthy of being offered to human beings. Such flowers as grow on cemeteries and crematoria, or in places dedicated to the deities, should not be brought and used for marriage and other rites having growth and prosperity for their object, or for acts of dalliance and pleasure in secrecy. Such flowers as are born on mountains and in vales, and as are agreeable in scent and aspect, should be offered unto the deities. Sprinkling them with sandal-paste, such agreeable flowers should be duly offered according to the ordinances of the scriptures.