Karyological observations were made on 14 species of liverworts from China and Singapore. The chromosome numbers of four species, Metzgeria consanguinea Schiffn. (n=8), Riccardia elata (Steph.) Schiffn. (n=9 m), Riccardia graeffei (Steph.) Hewson (n=9 m), and Riccardia kodamae Mizut. & S.Hatt. (n=9 m), are reported for the first time. The karyotype formulae of Riccardia elata, Metacalypogeia cordifolia (Steph.) Inoue (n=9), Pallavicinia lyellii (Hook.) Carruth. (n=8), Pellia epiphylla (L.) Corda (n=8 m), and Scapania ciliata Sande Lac. (n=8 m) are provided. Two different chromosome numbers (n=9, n=9 m) were found in Jubula javanica Steph. Of 14 species investigated cytologically, eight species have an m-chromosome. Riccardia elata is new to the liverwort flora of China.