The graptolites studied here were collected from the Ashgillian Wufeng Formation in Wuning County, Jiangxi Province, which included 9 species ofDicellograptus, 2 species ofTangyalgraptus and 1 species ofDicranograptus. The polarity and states of 8 selected characters are analyzed based on the morphological features and stratigraphic sequences of the 12 species and a parsimonious cladogram is reconstructed by using the monothetic method proposed by Carnin and Sokal. A phyloneny tree of evolutionary significance formed by adding a time-axis to the cladogram indicates that the AshgillianDicellograptus in the investigated area includes two independent evolutionary lineages starting to diverge as early as in the Caradocian and, within the main lineage composed of the dicellograptids with square or subsquare basal portion, two clades represented respectively byDicellograptus cornplexus andD. turgidus mark the highest stage of the Ashgillian dicellograptid evolution.