Sepal vs. Tepal

(botany) One of the component parts of the calyx, particularly when the sepals in a plant's calyx are not fused into a single structure.

A leaf or division of the calyx.

one of the green parts that form the calyx of a flower

A sepal ( or ) is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom.

(botany) Any component of the perianth (outermost whorls of flower parts, not involved in reproduction), especially when the components are not distinguished into sepals and petals.

an undifferentiated part of a perianth that cannot be distinguished as a sepal or a petal (as in lillies and tulips)

A tepal is one of the outer parts of a flower (collectively the perianth). The term is used when these parts cannot easily be classified as either sepals or petals.