<i>Syringa vulgaris</i> (common Lilac) cultivar "Sensation", at <a href="https://en.wikipedia.org/wiki/Highland_Park,_Rochester,_New_York" class="extiw" title="en:Highland Park, Rochester, New York">Highland Park</a> in <a href="https://en.wikipedia.org/wiki/Rochester,_New_York" class="extiw" title="en:Rochester, New York">Rochester, New York</a>.
The information plaque reads: "This is a very unusual lilac; a dark purple flower with a brilliant white picotee margin. It was discovered by a Dutch hybridizer who was forcing lilacs as cut flowers in a greenhouse. One branch had this sport, or bud mutation, and Maarse recognized the interest that this lilac would create."
<a href="//commons.wikimedia.org/wiki/User:LtPowers" title="User:LtPowers">LtPowers</a>
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<span class="int-own-work" lang="en">Own work</span>