While no studies have been done to test Levenhookia for carnivory, it is plausible that they are carnivorous plants like the related Stylidium species.

Specifically, the subgenus Centridium is the subgeneric taxonomy in the genus Stylidium that appears to be most closely related to Levenhookia and most suggests an ancestral relationship.

[2] Sherwin Carlquist notes that Levenhookia is most likely a derivative of Stylidium and has relied on outcropping as its mode of evolution.

The species in this genus represent a series from L. preissii, which requires cross pollination for reproduction, to L. dubia, which relies on facultative self-pollination.

[2] In an earlier publication, Rica Erickson described this series in reverse, suggesting that path as the evolutionary sequence.