Nitrophila mohavensis is a rare species of flowering plant in the family Amaranthaceae known by the common name Amargosa niterwort.

[3] The plant grows only in alkaline salt pans made up of moist and drying, salt-encrusted clay soils surrounded by other halophytes, such as Atriplex confertifolia and Cleomella brevipes.

[2][4] Nitrophila mohavensis, the Amargosa niterwort, is a petite rhizomatous perennial herb growing no more than about 10 centimeters tall.

It produces erect branches, often in pairs, covered in fleshy oval-shaped green leaves 3 or 4 millimeters long.

[3] The plant relies on saturation of its soil by a high water table, and the main threat to its existence is the pumping of groundwater.