(R)-prunasin

The almond (Prunus dulcis, syn. Prunus amygdalus, Amygdalus communis, Amygdalus dulcis) (or badam in Indian English, from Persian: بادام ) is a species of tree native to the Middle East and South Asia. "Almond" is also the name of the edible and widely cultivated seed of this tree. Within the genus Prunus, it is classified with the peach in the subgenus Amygdalus, distinguished from the other subgenera by the corrugated shell (endocarp) surrounding the seed.

Sambucus (elder or elderberry) is a genus of flowering plants in the family Adoxaceae. It was formerly placed in the honeysuckle family, Caprifoliaceae, but was reclassified due to genetic evidence. It contains between 5 and 30 species of deciduous shrubs, small trees and herbaceous perennial plants.

The quince (Cydonia oblonga) is the sole member of the genus Cydonia in the family Rosaceae (which also contains apples and pears, among other fruits). It is a small deciduous tree that bears a pome fruit, similar in appearance to a pear, and bright golden-yellow when mature. Throughout history the cooked fruit has been used as food, but the tree is also grown for its attractive pale pink blossom and other ornamental qualities.

edible seed of the almond tree

fruit of Prunus serotina

fruit of the quince plant (Cydonia, Pseudocydonia)

fruit of Prunus serotina