Cenchrus agrimonioides

The taxon is on the U.S. Endangered Species List, and also on the State of Hawaiʻi Endangered Species List. Two of the subpopulations occur in a protected area. The five Oʻahu subpopulations are managed and monitored by the Oʻahu Army Natural Resources Program and the two Maui subpopulations are managed and monitored by the Hawaiʻi State Plant Extinction Prevention Program. Ex situ cultivation, propagule storage is ongoing. Outplantings have occurred, and have produced a few viable offspring. Further research is needed on general ecology, life history, population size, distribution, and trends; population genetics, and threats.

Conservation actions such as fencing to exclude feral ungulates and control of alien invasive plants has improved the status of the remaining populations. Outplanting to augment subpopulations on the island of Oʻahu have greatly increased the number of plants. These are expected to increase the number of mature plants in the next several years, but the extent of occurrence and area of occupancy are unlikely to increase much more unless a subpopulation is established on another island. Seeds and living plants are kept as ex situ collections by the Oʻahu Army Natural Resources Program, the Fleming Arboretum, and Lyon Arboretum's Hawaiian Rare Plant Program.