The term regulus calendula is identified in base64 scheme by the sequence cmVndWx1cyBjYWxlbmR1bGE=, while the MD5 signature is equal to c518aa3d3bbf5a10bb05382b6fc4ffbd. The ASCII encoding of regulus calendula in hexadecimal notation is 726567756c75732063616c656e64756c61.