Petal
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Petals are modified leaves that form an inner whorl surrounding the reproductive parts of flowers. They are often brightly coloured or unusually shaped to attract pollinators. All of the petals of a f
Tetrameric flower of a primrose willowherb (Ludwigia octovalvis) showing petals and sepals
A tulip's actinomorphic flower with three of both petals and sepals, similar enough to be considered tepals
Pelargonium peltatum flowers resemble those of geraniums, but are conspicuously zygomorphic.
Geranium incanum, with an actinomorphic flower typical of the genus
Tepal
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A tepal is one of the outer parts of a flower. The term is used when these parts cannot easily be classified as either sepals or petals. This may be because the parts of the perianth are undifferentia
Petal
…called sepals, that collectively form the calyx. When the petals and sepals of a flower are difficult to distinguish, they are collectively called tepals. Although petals are usually the most conspicuous parts of flowers pollinated by animals, wind-pollinated species such as the grasses often have very…
A Lilium flower showing the six tepals: the outer three are sepals and the inner three are petals.
Flowers of Magnolia × alba showing tepals in various stages of development
Tepals of Magnolia × wieseneri
A hellebore flower showing the petaloid sepals