Mo. Rev. Stat. § 544.145

The governor may offer a reward of not to exceed three hundred dollars for the apprehension and delivery to the proper sheriff or other officer designated by him, of any person charged with or convicted of a felony and who has broken prison, escaped or fled from justice and absconded or secreted himself. The proper sheriff on delivery of the fugitive shall give his receipt therefor and the governor, upon presentation of the receipt, shall certify the amount of the reward to the commissioner of administration for payment out of the state treasury.