Calycadenia micrantha is an uncommon species of flowering plant in the family Asteraceae known by the common name small-flowered calycadenia.

[5] Some specimens of the plant had previously been included within the description of its relative, Calycadenia truncata.

[6] The fact that it has been found in relatively far-flung locations suggests it could easily be present in other areas between them and, as a newly classified species, has simply not been reported yet.

[3] This annual plant produces a slender purplish stem 10 to 50 centimeters tall.

Unlike other Calycadenia species, this plant is self-compatible, or able to fertilize itself.