The end of December seemed to be the peak blooming period for this Blue Mountains population of Utricularia dichotoma subsp. aquilonia. This subspecies usually grows on the banks of shallow creeks in the elevated sandstone tablelands of central and northern New South Wales, located in eastern Australia. It specifically differs from other subspecies within its range by its bracts, which are strongly gibbous (a bulbous protuberance) at their base, and which lack a prominent downwards-pointing spur extending from the point of fixation.