Here is the latest St. Patrick's Day jersey (left) and an older one (right) both showing shamrocks. However, shamrocks have three leaves, while clovers can have three or four leaves. So the old jersey was botanically correct - the new jersey got it wrong. But who would notice? :)
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/98147195@N00">mark6mauno</a>
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<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/mark6mauno/432051281/">Ryan Bennett</a>