It is a three-leafed, old white clover. It is sometimes of the variety Trifolium repens (a white clover, known in Irish asseamair bhán) but today usually Trifolium dubium (a lesser clover, Irish:seamair bhuí).

The shamrock, a symbol of Ireland and a registered trademark of the Republic of Ireland, is a three-leafed old white clover, sometimes of the variety Trifolium repens(a white clover, known in Irish as seamair bhán) but today usually Trifolium dubium (a lesser clover, Irish: seamair bhuí).

Melanostoma dubium was created in 1837.

Trifolium jokerstii was created in 1998.

Trifolium alexandrinum was created in 1755.