It is threatened by habitat destruction and degradation caused by deer, cattle, introduced species of plants, and off road vehicles.

[1] This plant is a small, mat-forming shrub growing no more than about 10 centimeters tall.

The plant grows in shrublands on sand dunes.

It is present only on a six-kilometer strip of habitat on the Molokai coastline.

[1] Media related to Tetramolopium rockii at Wikimedia Commons