Definition of "tepal"

In Tulipa the pubescent tips of the tepals are quite interesting in particular those of T. fosteriana. The top of the tepal is initiated and develops before the reflexed, lateral parts.

1982, H. Q. Varekamp (translator and editor), Z. Botschantzeva, Tulips: Taxonomy, Morphology, cytology, phytogeography and physiology, page 27

The species bears creamy white flowers with a yellow base and tepals often streaked with rose-pink.

2001, Barbara W. Ellis, Taylor's Guide to Bulbs, page 400

In our material of T. bulbosa, the abaxial outer tepal was larger at its inception than the lateral ones (Fig 8.4C), whereas the primordia of the outer tepals are of nearly equal size in both T. barrelieri (Fig 8.5E) and T. palustris (not shown).

2013, Margarita V. Remizowa, Dmitry D. Sokoloff, Paula J. Rudall, “8: Patterns of bract reduction in racemose inflorescences of early-divergent monocots”, in Paul Wilkin, Simon J. Mayo, editors, Early Events in Monocot Evolution, page 194