Nototrichium divaricatum, also known as Na Pali rockwort or kuluʻī (Hawaiian), is a rare perennial shrub in the pigweed family, Amaranthaceae, that is endemic to the island of Kauaʻi in Hawaiʻi. It can be found in the northwestern part of the island in dry to moist shrublands, where it grows on north-facing cliffs and ridges. This species was first described in 1996. There are possibly fewer than 3,000 N. divaricatum plants in existence.