Herb trinity shams

Shamrock: The shamrock, an unofficial symbol of Ireland, is a three-leaved young white clover, sometimes (rarely nowadays) Trifolium repens (white clover, known in Irish as seamair bhán) but more usually today Trifolium dubium (lesser clover, Irish: seamair bhuí). The shamrock was traditionally used for its medical properties and was a popular motif in Victorian times. http://en.wikipedia.org/wiki/Shamrock

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Holy trinity