C. acuminata Ewart & McLennan nom.illeg.

(synonym); C. lanceolata R.Br (misapplied)[1] Commelina ciliata is found in the Northern Territories and in Western Australia.

[2] It is an annual or perennial herb with a prostrate or semi-prostrate habit that can reach 0.7 m in height.

It is found in water-retaining soils and areas such as creeks and floodplains.

[3] The species was first described in 1917 as C. acuminata[4] and since a holotype was not designated at the time, the specimen used for the description has been assigned as the lectotype.