te·pal 
(tēpəl, tĕpəl)
(tēpəl, tĕpəl)n.
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.
[French tépale, alteration (influenced by sépale, sepal) of pétale, petal, from New Latin petalum; see PETAL.]