The governor shall have power to remit fines and forfeitures, to grant reprieves, commutations and pardons after conviction, for all offenses except treason and cases of impeachment; but the legislature may by law regulate the manner in which the remission of fines, pardons, commutations and reprieves may be applied for. Upon conviction for treason he shall have power to suspend the execution of sentence until the case is reported to the legislature at its next regular session, when the legislature shall either pardon, or commute the sentence, direct the execution of the sentence or grant further reprieve. He shall communicate to the legislature at each regular session each case of remission of fine, reprieve, commutation or pardon granted by him, stating the name of the convict, the crime for which he was convicted, the sentence and its date, and the date of the remission, commutation, pardon or reprieve with his reasons for granting the same.