tepal

A segment of the perianth of a flower in which the calyx and corolla (which make up the perianth) are nearly indistinguishable, as in tulips or lilies. The tepals are equivalent to the petals and sepals.

In botany, an individual segment of a perianth, whether sepal or petal.

A division of a perianth.

One of the component parts of the perianth, the outermost whorls of flower parts, especially when the perianth is not divided into two whorls of unequal appearance.

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