Sedum sinforosanum is a new sedum from the Barranca de Sinforosa, Chihuahua, northwestern Mexico. It belongs to subgenus Sedum L. because of its free petals and sepals and is generally glabrous. It is distinguished from Sedum suaveolens by being many-branched, with smaller rosy-colored rosettes, the absence of bracteoles on the pedicels, petals not circinate, truncate, nectaries bright yellow, ovary pink and with straight styles.