[5] Wahlenbergia gracilis is a perennial, tufted herb ranging from 5 to 80cm in height[6] which is usually erect or sprawling, and is multi-branched from basal stems.

[4] Conspicuous flowers are in thyrsoids which make up the upper half of the plant, pedicels are between 2-11cm long and glabrous or sometimes sparsely hirsute.

[9] Smith notes that a distinguishing feature of W. gracilis is that it is commonly found in mesic areas, meaning environments containing a moderate amount of water.

[4] Wahlenbergia gracilis is an accepted species, first published in Monographie des Campanul?es 142 (1830).

[3] Wahlenbergia gracilis has a fibrous root system which can be important in stabilizing soil and preventing erosion.

[12] It also plays an important role for a number of native pollinators, including native bee species and a number of butterflies notably Vanessa kershawi (Australian painted lady), Zizina labradus (common grass-blue) and Ogyris olane (Eastern bronze-azure).